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POOLING AND SERVICING AGREEMENT

Pooling and Servicing Agreement

POOLING AND SERVICING AGREEMENT | Document Parties: DEUTSCHE BANK NATIONAL TRUST COMPANY | IndyMac Bank | INDYMAC MBS, INC You are currently viewing:
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DEUTSCHE BANK NATIONAL TRUST COMPANY | IndyMac Bank | INDYMAC MBS, INC

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Title: POOLING AND SERVICING AGREEMENT
Governing Law: Delaware     Date: 4/13/2007

POOLING AND SERVICING AGREEMENT, Parties: deutsche bank national trust company , indymac bank , indymac mbs  inc
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                                  EXHIBIT 99.1
                                  ------------

                     The Pooling and Servicing Agreement.


<PAGE>


                                                                Execution Copy



==============================================================================





                               INDYMAC MBS, INC.
                                   Depositor


                             INDYMAC BANK, F.S.B.
                              Seller and Servicer


                     DEUTSCHE BANK NATIONAL TRUST COMPANY
                                    Trustee


                          ---------------------------

                        POOLING AND SERVICING AGREEMENT
                            Dated as of March 1, 2007

                          ---------------------------


                       INDYMAC INDX MORTGAGE LOAN TRUST
                                   2007-AR5


                      MORTGAGE PASS-THROUGH CERTIFICATES
                                 Series 2007-AR5







==============================================================================



<PAGE>




                               TABLE OF CONTENTS
                                  (Continued)


                                TABLE OF CONTENTS


                                                                           Page

ARTICLE ONE DEFINITIONS                                                        9

      Section 1.01       Definitions...........................................9
      Section 1.02       Rules of Construction................................47

ARTICLE TWO CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES      49

      Section 2.01       Conveyance of Mortgage Loans.........................49
      Section 2.02       Acceptance by the Trustee of the Mortgage Loans......52
      Section 2.03.      Representations, Warranties, and Covenants of the
                         Seller and the Servicer.............................54
      Section 2.04.       Representations and Warranties of the Depositor as
                         to the Mortgage Loans...............................56
      Section 2.05.      Delivery of Opinion of Counsel in Connection with
                         Substitutions.......................................56
      Section 2.06       Execution and Delivery of Certificates...............56
      Section 2.07       REMIC Matters........................................57

ARTICLE THREE ADMINISTRATION AND SERVICING OF MORTGAGE LOANS                   58

      Section 3.01       Servicer to Service Mortgage Loans...................58
      Section 3.02       [Reserved]...........................................59
      Section 3.03.      Rights of the Depositor and the Trustee in Respect
                          of the Servicer.....................................59
      Section 3.04       [Reserved]...........................................59
      Section 3.05       Trustee to Act as Servicer...........................59
      Section 3.06.      Collection of Mortgage Loan Payments; Certificate
                         Account; Distribution Account.......................59
      Section 3.07.      Collection of Taxes, Assessments and Similar Items;
                         Escrow Accounts.....................................62
      Section 3.08.      Access to Certain Documentation and Information
                         Regarding the Mortgage Loans........................62
      Section 3.09.      Permitted Withdrawals from the Certificate Account
                         and the Distribution Account........................63
      Section 3.10.      Maintenance of Hazard Insurance; Maintenance of
                         Primary Insurance Policies..........................64
      Section 3.11       Enforcement of Due-On-Sale Clauses; Assumption
                         Agreements..........................................65
      Section 3.12       Realization Upon Defaulted Mortgage Loans............66
      Section 3.13       Trustee to Cooperate; Release of Mortgage Files......68
      Section 3.14.      Documents, Records and Funds in Possession of the
                         Servicer to be Held for the Trustee.................69
      Section 3.15       Servicing Compensation...............................69
      Section 3.16       Access to Certain Documentation......................70
      Section 3.17       Annual Statement as to Compliance....................70
      Section 3.18       Errors and Omissions Insurance; Fidelity Bonds.......70
      Section 3.19       [Reserved.]..........................................71
      Section 3.20       Notification of Adjustments..........................71
      Section 3.21       Prepayment Charges...................................71


                                      -i-


<PAGE>

ARTICLE FOUR DISTRIBUTIONS AND ADVANCES BY THE SERVICER                       73

      Section 4.01       Advances.............................................73
      Section 4.02       Priorities of Distribution to Group I Certificates...74
      Section 4.03       Priorities of Distribution to Group II Certificates..78
      Section 4.04.      Cross-Collateralization; Adjustments to Group I
                         Available Funds for Aggregate Loan Group I..........80
      Section 4.05       Allocation of Realized Losses to Group I
                         Certificates........................................81
      Section 4.06       Monthly Statements to Certificateholders.............83
      Section 4.07        Carryover Reserve Fund...............................85
      Section 4.08.      Determination of Pass-Through Rates for Group II
                         Offered Certificates................................86

ARTICLE FIVE THE CERTIFICATES                                                  88

      Section 5.01       The Certificates.....................................88
      Section 5.02.      Certificate Register; Registration of Transfer and
                         Exchange of Certificates............................88
      Section 5.03       Mutilated, Destroyed, Lost or Stolen Certificates....92
      Section 5.04       Persons Deemed Owners................................92
      Section 5.05       Access to List of Certificateholders' Names and
                          Addresses...........................................93
      Section 5.06       Maintenance of Office or Agency......................93

ARTICLE SIX THE DEPOSITOR AND THE SERVICER                                    94

      Section 6.01        Respective Liabilities of the Depositor and the
                         Servicer............................................94
      Section 6.02       Merger or Consolidation of the Depositor or the
                         Servicer............................................94
      Section 6.03.      Limitation on Liability of the Depositor, the Seller,
                         the Servicer, and Others............................94
      Section 6.04       Limitation on Resignation of the Servicer............95

ARTICLE SEVEN DEFAULT                                                         96

      Section 7.01       Events of Default....................................96
      Section 7.02       Trustee to Act; Appointment of Successor.............97
       Section 7.03       Notification to Certificateholders...................99

ARTICLE EIGHT CONCERNING THE TRUSTEE                                         100

      Section 8.01       Duties of the Trustee...............................100
      Section 8.02       Certain Matters Affecting the Trustee...............100
      Section 8.03       Trustee Not Liable for Certificates or Mortgage
                         Loans..............................................102
      Section 8.04       Trustee May Own Certificates........................102
      Section 8.05       Trustee's Fees and Expenses.........................102
      Section 8.06       Eligibility Requirements for the Trustee............103
      Section 8.07       Resignation and Removal of the Trustee..............103
      Section 8.08       Successor Trustee...................................104
      Section 8.09       Merger or Consolidation of the Trustee..............105
      Section 8.10       Appointment of Co-Trustee or Separate Trustee.......105
      Section 8.11       Tax Matters.........................................106



                                     -ii-

<PAGE>

ARTICLE NINE TERMINATION                                                     109

      Section 9.01       Termination upon Liquidation or Purchase of the
                         Mortgage Loans.....................................109
      Section 9.02       Final Distribution on the Certificates..............111
      Section 9.03       Additional Termination Requirements.................112

ARTICLE TEN MISCELLANEOUS PROVISIONS                                         113

      Section 10.01.     Amendment...........................................113
      Section 10.02.     Recordation of Agreement; Counterparts..............114
      Section 10.03.     Governing Law.......................................115
      Section 10.04.     Intention of Parties................................115
      Section 10.05.     Notices.............................................115
       Section 10.06.     Severability of Provisions..........................116
      Section 10.07.     Assignment..........................................116
      Section 10.08.     Limitation on Rights of Certificateholders..........116
      Section 10.09.     Inspection and Audit Rights.........................117
      Section 10.10.     Certificates Nonassessable and Fully Paid...........117
      Section 10.11.     Official Record.....................................117
      Section 10.12.     Protection of Assets................................118
      Section 10.13.     Qualifying Special Purpose Entity...................118

ARTICLE ELEVEN EXCHANGE ACT REPORTING                                       119

      Section 11.01.     Filing Obligations..................................119
      Section 11.02.     Form 10-D Filings...................................119
      Section 11.03.     Form 8-K Filings....................................120
      Section 11.04.     Form 10-K Filings...................................120
      Section 11.05.     Sarbanes-Oxley Certification........................123
      Section 11.06.     Form 15 Filing......................................123
      Section 11.07.     Report on Assessment of Compliance and
                          Attestation........................................123
      Section 11.08.     Use of Subcontractors...............................124
      Section 11.09.     Amendments..........................................125



                                     -iii-

<PAGE>







                                     -42-
NY1 6103624v.5


                               TABLE OF CONTENTS
                                  (Continued)


                                     -iv-
NY1 6103624v.5


<PAGE>


                                    SCHEDULES
Schedule I:    Mortgage Loan Schedule......................................S-I-1
Schedule II:   Representations and Warranties of the Seller/Servicer......S-II-1
Schedule III: Representations and Warranties as to the Mortgage Loans...S-III-1
Schedule IV:   Form of Monthly Report.....................................S-IV-1


                                   EXHIBITS
Exhibit A:     Form of Senior Certificate....................................A-1
Exhibit B:     Form of Subordinated Certificate..............................B-1
Exhibit C:     Form of Class A-R Certificate.................................C-1
Exhibit D:     Form of Class C Certificate...................................D-1
Exhibit E      Form of Reverse of Certificates...............................E-1
Exhibit F:     Form of Class P Certificates..................................F-1
Exhibit G-1:   Form of Initial Certification of Trustee....................G-1-1
Exhibit G-2:   [Reserved]..................................................G-2-1
Exhibit G-3:   Form of Delay Delivery Certification........................G-3-1
Exhibit G-4:   [Reserved]..................................................G-4-1
Exhibit H-1:   Form of Final Certification of Trustee......................H-1-1
Exhibit H-2:   [Reserved]..................................................H-2-1
Exhibit I:     Form of Transfer Affidavit....................................I-1
Exhibit J:     Form of Transferor Certificate................................J-1
Exhibit K:      Form of Investment Letter (Non-Rule 144A).....................K-1
Exhibit L:     Form of Rule 144A Letter......................................L-1
Exhibit M:     Form of Request for Release (for Trustee).....................M-1
Exhibit N:     Request for Release of Documents..............................N-1
Exhibit O:     [Reserved]....................................................O-1
Exhibit P:     Form of Corridor Contract.....................................P-1
Exhibit Q      [Reserved]....................................................Q-1
Exhibit R-1    Form of Performance Certification (Trustee)...................R-1
Exhibit S      Form of Servicing Criteria to be Addressed in Assessment
              of Compliance Statement.......................................S-2
Exhibit T      Form of List of Item 1119 Parties.............................T-1
Exhibit U      Form of Sarbanes-Oxley Certification..........................U-1



                                     -iv-


<PAGE>



      THIS POOLING AND SERVICING AGREEMENT, dated as of March 1, 2007, among
INDYMAC MBS, INC., a Delaware corporation, as depositor (the "Depositor"),
IndyMac Bank, F.S.B. ("IndyMac"), a federal savings bank, as seller (in that
capacity, the "Seller") and as servicer (in that capacity, the "Servicer"),
and Deutsche Bank National Trust Company, a national banking association, as
trustee (the "Trustee").

                          W i t n e s s e t h   T h a t

      In consideration of the mutual agreements set forth in this Agreement,
the parties agree as follows:

                             PRELIMINARY STATEMENT

      The Depositor is the owner of the Trust Fund that is hereby conveyed to
the Trustee in return for the Certificates. As provided in this Agreement, the
Trustee shall elect that the Trust Fund (exclusive of the Carryover Reserve
Fund and any amounts in respect of waived Prepayment Charges paid by the
Servicer to the Class P Certificates pursuant to Section 3.21(b)) be treated
for federal income tax purposes as comprising three real estate mortgage
investment conduits (each, a "REMIC" or, in the alternative, "REMIC 1A",
"REMIC 1B" and the "Master REMIC"). Each Certificate, other than the Class A-R
Certificates, will represent ownership of one or more regular interests in the
Master REMIC for purposes of the REMIC Provisions. The Class A-R Certificates
represent ownership of the sole class of residual interest in each REMIC
created under this Agreement. The Master REMIC will hold as assets the several
classes of uncertificated REMIC 1A and REMIC 1B Interests (other than the
Class R-1A and R-1B Interests). REMIC 1A will hold as assets all property of
the Trust Fund relating to Loan Groups 1, 2 and 3 and any amounts in respect
of waived Prepayment Charges paid by the Servicer to the Class I-P
Certificates pursuant to Section 3.21(b). REMIC 1B will hold as assets all
property of the Trust Fund relating to Loan Group 4 other than the Carryover
Reserve Fund and any amounts in respect of waived Prepayment Charges paid by
the Servicer to the Class 4-P Certificates pursuant to Section 3.21(b). Each
REMIC 1A Interest (other than the Class R-1A Interest) is hereby designated as
a regular interest in REMIC 1A. Each REMIC 1B Interest (other than the Class
R-1B Interest) is hereby designated as a regular interest in REMIC 1B. The
latest possible maturity date of all REMIC regular interests created in this
Agreement shall be the Latest Possible Maturity Date. All amounts in respect
of waived Prepayment Charges paid by the Servicer to the Class P Certificates
pursuant to Section 3.21(b) will be treated as paid directly by the Servicer
to the Class P Certificates and not as paid by or through any REMIC created
under this Agreement.


REMIC 1A

      The REMIC 1A Regular Interests will have the initial principal balances,
Pass-Through Rates and corresponding Loan Groups as set forth in the following
table:

                                       Initial
                                     Principal
                                    Balance or
                                       Notional     Pass-Through     Corresponding
REMIC 1A Interests                       Amount             Rate        Loan Group
------------------                   ----------     ------------     -------------
A-1   (0.9% of the Assumed Balance
of Loan Group 1)                         (1)             (2)               1
B-1   (0.1% of the Assumed Balance                                   
of Loan Group 1)                         (1)             (2)               1
C-1   (Excess of Loan Group 1)            (1)             (2)               1


<PAGE>

A-2   (0.9% of the Assumed Balance                                   
of Loan Group 2)                         (1)             (2)               2
B-2   (0.1% of the Assumed Balance                                    
of Loan Group 2)                         (1)             (2)               2
C-2   (Excess of Loan Group 2)            (1)             (2)               2
A-3   (0.9% of the Assumed Balance                                   
of Loan Group 3)                          (1)             (2)               3
B-3   (0.1% of the Assumed Balance                                   
of Loan Group 3)                         (1)             (2)               3
C-3   (Excess of Loan Group 3)            (1)             (2)                3
1A-P-1                                   $100            (3)             N/A
1A-P-2                                   $100            (3)             N/A
1A-$100                                  $100            (4)             N/A
R-1A                                      (5)             (5)             N/A
---------------                                               

(1) Each Class A Interest will have a principal balance initially equal to
0.9% of the Assumed Balance of its corresponding Loan Group. Each Class B
Interest will have a principal balance initially equal to 0.1% of the the
Assumed Balance of its corresponding Loan Group. The initial principal balance
of each Class C Interest will equal the excess of the initial aggregate Stated
Principal Balance of the Mortgage Loans in its corresponding Loan Group over
the initial aggregate principal balances of the Class A and Class B Interests
(and of the Class 1A-$100 Interest, in the case of the Class C-1 Interest)
corresponding to such Loan Group.

(2) The Weighted Average Adjusted Net Mortgage Rate of the Mortgage Loans in
the corresponding Loan Group.

(3) The Class 1A-P-1 and Class 1A-P-2 Interests will not be entitled to any
interest. The Class 1A-P-1 Interests will be entitled to 100% of any Hard
Prepayment Charges collected on the Group 1, Group 2 and Group 3 Mortgage
Loans and the Class 1A-P-2 Interests will be entitled to 100% of any Soft
Prepayment Charges paid on the collected on the Group 1 Mortgage Loans, Group
2 Mortgage Loans and Group 3 Mortgage Loans.

(4) The Weighted Average Adjusted Net Mortgage Rate of the Mortgage Loans in
Loan Group 1.

(5) The Class R-1A Interest is the sole class of residual interest in REMIC
1A. It has no principal balance and pays no principal or interest.

      On each Distribution Date, the Group I Available Funds shall be
distributed with respect to the REMIC 1 Interests in the following manner:

(1) Interest is to be distributed with respect to each REMIC 1A Interest
according to the formulas described above;

(2)...Principal Amounts and Realized Losses will be allocated to make the
Class 1A-P-1 and Class 1A-$100 balance equal to the principal balances of the
Class P and Class A-R Certificates, respectively, for such Distribution Date.

(3) If a Cross-Over Situation does not exist with respect to any Class of
Interests, then Principal Amounts and Realized Losses arising with respect to
each Loan Group in Aggregate Loan Group I will be allocated: first to cause
the Loan Group's corresponding Class A and Class B to equal, respectively,
0.9%


                                      2

<PAGE>

of the Assumed Balance and 0.1% of the Assumed Balance; and second to the
Loan Group's corresponding Class C Interest;

(4) If a Cross-Over Situation exists with respect to the Class A and Class B
Interests then:

      (a) if the Calculation Rate in respect of the outstanding Class A and
      Class B Interests is less than the Pass-Through Rate in respect of the
      Group I Subordinated Certificates, Principal Relocation Payments will be
      made proportionately to the outstanding Class A Interests prior to any
      other distributions of principal from each such Loan Group; and

      (b) if the Calculation Rate in respect of the outstanding Class A and
      Class B Interests is greater than the Pass-Through Rate in respect of
      the Group I Subordinated Certificates, Principal Relocation Payments
      will be made proportionately to the outstanding Class B Interests prior
      to any other distributions of principal from each such Loan Group.

In case of either (a) or (b), Principal Relocation Payments will be made so as
to cause the Calculation Rate in respect of the outstanding Class A and Class
B Interests to equal the Pass-Through Rate in respect of the Group I
Subordinated Certificates. With respect to each Loan Group in Aggregate Loan
Group I, if (and to the extent that) the sum of (a) the principal payments
comprising the Principal Amount received during the Due Period and (b) the
Realized Losses on the Mortgage Loans in that Loan Group, are insufficient to
make the necessary reductions of principal on the Class A and Class B
Interests, then interest will be added to the Loan Group's other REMIC 1A
Interests that are not receiving Principal Relocation Payments, in proportion
to their principal balances.

      (c) Unless otherwise required to achieve the Calculation Rate, the
      outstanding aggregate Class A and Class B Interests for all Loan Groups
      in Aggregate Loan Group I will not be reduced below 1% of the excess of
      (i) the aggregate Stated Principal Balances of the Mortgage Loans in
      Aggregate Loan Group I as of the end of any Due Period (reduced by any
      Principal Prepayments received after the Due Period that are to be
      distributed on the Distribution Date related to the Due Period) over
      (ii) the aggregate Class Certificate Balance of the Group I Senior
      Certificates (other than the Class A-R Certificates) for all Certificate
      Groups related to Aggregate Loan Group I as of the related Distribution
      Date (after taking into account distributions of principal on such
      Distribution Date).

If (and to the extent that) the limitation in paragraph (c) prevents the
distribution of principal to the Class A and Class B Interests of a Loan
Group, and if the Loan Group's Class C Interest has already been reduced to
zero, then the excess principal from that Loan Group will be paid to the Class
C Interests of the other Loan Group(s) in Aggregate Loan Group I, the
aggregate principal balances of the Class A and Class B Interests of which are
less than 1% of the Assumed Balance. If the Mortgage Loans in the Loan Group
of the Class C Interest that receives such payment have a Weighted Average
Adjusted Net Mortgage Rate below the Weighted Average Adjusted Net Mortgage
Rate of the Mortgage Loans in the Loan Group making the payment, then the
payment will be treated by the REMIC 1A as a Realized Loss. Conversely, if the
Mortgage Loans in the Loan Group of the Class C Interest that receives such
payment has a Weighted Average Adjusted Net Mortgage Rate above the Weighted
Average Adjusted Net Mortgage Rate of the Mortgage Loans in the Loan Group
making the payment, then the payment will be treated by the REMIC 1A as a
reimbursement for prior Realized Losses.


                                      3

<PAGE>

REMIC 1B

      The REMIC 1B Interests will have the Initial Principal Balances and
Pass-Through Rates as set forth in the following table:


                                                                   Corresponding
                         Principal       Pass-Through                Certificates
REMIC 1B Interests        Balances                Rate                     Classes
------------------        --------        ------------               -------------
Class 1B-4-A-1-1             (1)              (2)                    Class 4-A-1-1
Class 1B-4-A-1-2             (1)              (2)                    Class 4-A-1-2
Class 1B-4-A-2-1             (1)              (2)                    Class 4-A-2-1
Class 1B-4-A-2-2             (1)              (2)                    Class 4-A-2-2
Class 1B-4-M-1               (1)              (2)                    Class 4-M-1
Class 1B-4-M-2               (1)              (2)                    Class 4-M-2
Class 1B-4-M-3               (1)              (2)                    Class 4-M-3
Class 1B-4-M-4               (1)              (2)                    Class 4-M-4
Class 1B-Accrual             (1)              (2)                    N/A
Class 1B-P-2           $ 100                   (3)                    Class P-2
Class R-1B                   (4)              (4)                    N/A


------------------
(1)   On each Distribution Date, Principal Amounts and Realized Losses will be
     allocated to the REMIC 1B Interests in such a manner that, following such
     allocations: (i) the principal balances of the REMIC 1B Interests (other
     than the Class 1B-Accrual and Class R-1B Interests) will equal 50% of the
     Certificate Balance of their Corresponding Certificates for such
     Distribution Date, (ii) the Class 1B-Accrual Interest will have a
     principal balance equal to 50% of the aggregate Stated Principal Balance
     of the Group 4 Mortgage Loans plus 50% of the Overcollateralized Amount.

(2)   The Weighted Average Adjusted Net Mortgage Rate of the Group 4 Mortgage
     Loans.


(3)   The Class 1B-P-1 and Class 1B-P-2 Interests will not be entitled to any
     interest. The Class 1B-P-1 Interests will be entitled to 100% of any Hard
     Prepayment Charges collected on the Group 4 Mortgage Loans and the Class
     1B-P-2 Interests will be entitled to 100% of any Soft Prepayment Charges
     paid on the collected on the Group 4 Mortgage Loans.

(4)   The Class R-1B Interest is the sole class of residual interest in REMIC
     1B. It has no principal balance and pays no principal or interest.


                                      4
<PAGE>


                               The Master REMIC

      The following table sets forth the Class Designation, Initial Class
Certificate Balance, Pass-Through Rate, Minimum Denominations and Integral
Multiples in excess thereof in respect of the Certificates, each of which
(other than the Class A-R Certificates) is hereby designated a regular
interest in the Master REMIC, in which such Classes shall be issuable:


                Initial Class                                           Integral
Class              Certificate     Pass-Through        Minimum         Multiples in
Designation            Balance             Rate   Denomination    Excess of Minimum
-----------      -------------     ------------   ------------    -----------------
Class 1-A-1       $183,455,000      Variable(1)        $25,000              $1
Class 2-A-1       $436,775,000      Variable(1)        $25,000              $1
Class C-M           $68,915,000      Variable(2)        $25,000              $1
Class 3-A-1        $82,170,000      Variable(1)        $25,000              $1
Class 3-A-2         $9,130,000      Variable(1)        $25,000              $1
Class A-R                 $100      Variable(1)         $100               N/A
Class B-1          $21,680,000      Variable(3)        $25,000              $1
Class B-2          $16,580,000      Variable(3)        $25,000              $1
Class B-3          $12,330,000      Variable(3)        $25,000              $1
Class B-4           $8,075,000      Variable(3)       $100,000              $1
Class B-5           $6,375,000      Variable(3)       $100,000              $1
Class B-6           $4,671,334      Variable(3)       $100,000              $1
Class I-P-1               $100          (4)              $100               N/A
Class I-P-2               $100         (4)              $100               N/A
Class 4-A-1-1     $231,778,000      Variable(5)        $25,000              $1
Class 4-A-1-2      $69,000,000      Variable(5)        $25,000               $1
Class 4-A-2-1      $82,280,000      Variable(5)        $25,000              $1
Class 4-A-2-2       $9,142,000      Variable(5)        $25,000              $1
Class 4-M-1        $11,820,000      Variable(5)        $25,000              $1
Class 4-M-2         $8,020,000      Variable(5)        $25,000              $1
Class 4-M-3         $3,590,000      Variable(5)        $25,000              $1
Class 4-M-4         $2,110,000      Variable(5)        $25,000              $1
Class 4-P-1               $100         (6)                 $100             N/A
Class 4-P-2               $100         (6)                $100             N/A
Class C             (7)                (8)                 N/A             N/A

(1) The Pass-Through Rate for this Class of Certificates for the Interest
Accrual Period related to any Distribution Date will be a per annum rate equal
to the Weighted Average Adjusted Net Mortgage Rate of the Mortgage Loans in the
Corresponding Loan Group. The Pass-Through Rate for the Interest Accrual Period
for the initial Distribution Date for the Class 1-A-1 Certificates will be
6.37329% per annum, for the Class 2-A-1 Certificates will be 6.12753% per annum
and for the Class 3-A-1 and Class 3-A-2 Certificates will be 6.07526% per
annum.

(2) The Pass-Through Rate for this Class of Certificates for the Interest
Accrual Period related to any Distribution Date will be a per annum rate equal
to the weighted average of the Pass-Through Rates on its Components. The
Pass-Through Rate on each Component for the Interest Accrual Period for each
Distribution Date will equal the Weighted Average Adjusted Net Mortgage Rate
of the Mortgage Loans in the related Loan Group. Each Component of the Class
C-M Certificates will be treated as a REMIC Regular Interest for federal
income tax purposes. The Pass-Through Rate for the Class C-M Certificates for
the Interest Accrual Period for the initial Distribution Date will be 6.20023%
per annum.


                                      5

<PAGE>


(3) The Pass-Through Rate for each Class of Group I Subordinated Certificates
for the Interest Accrual Period related to any Distribution Date will equal
(i) the sum of the following for each of Loan Group 1, Loan Group 2 and Loan
Group 3: the product of (x) the Weighted Average Adjusted Net Mortgage Rate of
the Mortgage Loans in that Loan Group as of the first day of the related Due
Period (after giving effect to Principal Prepayments received in the
Prepayment Period that ends during such Due Period) and (y) the related
Assumed Balance, immediately prior to that Distribution Date, divided by (ii)
the aggregate Class Certificate Balance of the Group I Subordinated
Certificates immediately prior to that Distribution Date. Solely for federal
income tax purposes, the Pass-Through Rate for these Certificates will be the
Calculation Rate.

(4) The Class I-P-1 and Class I-P-2 Certificates will not be entitled to any
interest. The Class I-P-1 Certificates will be entitled to 100% of any Hard
Prepayment Charges collected on the Group 1, Group 2 and Group 3 Mortgage
Loans and the Class I-P-2 Certificates will be entitled to 100% of any Soft
Prepayment Charges paid on the collected on the Group 1 Mortgage Loans, Group
2 Mortgage Loans and Group 3 Mortgage Loans.

(5) The Pass-Through Rate on this Class of Certificates for the Interest
Accrual Period relating to any Distribution Date (x) up to and including the
Distribution Date in March 2017 will be the lesser of (i) 5.75% per annum and
(ii) the Net Rate Cap and (y) any Distribution Date thereafter will adjust
monthly to equal the lesser of (i) the sum of the Six-Month LIBOR and 1.75%
and (ii) the Net Rate Cap.

(6) The Class 4-P-1 and Class 4-P-2 Certificates will not be entitled to any
interest. The Class 4-P-1 Certificates will be entitled to 100% of any Hard
Prepayment Charges collected on the Group 4 Mortgage Loans and the Class 4-P-2
Certificates will be entitled to 100% of any Soft Prepayment Charges paid on
the collected on the Group 4 Mortgage Loans.

(7) For federal income tax purposes, the Class C Certificates will represent
two classes of regular interests issued by the Master REMIC, (i) a class that
does not accrue interest and has a principal balance equal to the
Overcollateralized Amount as of the Closing Date, and (ii) a class that is not
entitled to principal and has a notional balance equal to the sum of the
principal balances of the REMIC 1B Regular Interests (excluding the Class R-1B
Interests).

(8) For each Interest Accrual Period the Class C Certificates are entitled to
the "Class C Distributable Amount," which shall consist of (i) a specified
portion of the interest on each of the REMIC 1B Regular Interests (excluding
the Class R-1B Interests) in an amount equal to the excess of: (a) the
weighted average pass-through rate in respect of such REMIC 1B Regular
Interests over (b) the product of two and the weighted average pass-through
rate in respect of such REMIC 1B Regular Interests treating each of the REMIC
1B Accretion Directed Classes as subject to a cap equal to the pass-through
rate in respect of the Corresponding Class Certificate of each such REMIC 1B
Regular Interest and the Class 1B-Accrual Interest as subject to a cap equal
to 0.00%, and (ii) collections of scheduled principal and principal
prepayments allocated to the class of regular interests referenced in clause
(i) of footnote (7) above.

      The foregoing REMIC structure is intended to cause all of the cash from
the Mortgage Loans to flow through to the Master REMIC as cash flow on a REMIC
regular interest, without creating any shortfall--actual or potential (other
than for credit losses) to any REMIC regular interest.

       For any purpose for which the Pass-Through Rates (other than in the
Master REMIC) are calculated, the interest rate on the Mortgage Loans shall be
appropriately adjusted to account for the difference between the monthly day
count convention of the Mortgage Loans and the monthly day count convention of
the regular interests issued by each of the REMICs. For purposes of
calculating the Pass-Through Rates for each of the interests issued by each
REMIC (other than the Master REMIC) created




                                      6
<PAGE>


hereunder such rates shall be adjusted to equal a monthly day count convention
based on a 30 day month for each Due Period and a 360-day year so that the
Mortgage Loans and all regular interests will be using the same monthly day
count convention.

Set forth below are designations of Classes of Certificates to the categories
used in this Agreement:

Accretion Directed Certificates........    None.

Accrual Certificates...................    None.

Book-Entry Certificates................    All Classes of Certificates other
                                          than the Physical Certificates.

Class I-P Certificates.................    Class I-P-1 and Class I-P-2
                                          Certificates.

Class 4-P Certificates.................    Class 4-P-1 and Class 4-P-2
                                          Certificates.

Class P Certificates...................    Class I-P and Class 4-P Certificates.

COFI Certificates......................    None.

Components.............................    Class C-M-1 Component and Class
                                          C-M-2 Component. For purposes of
                                           calculating distributions of
                                          principal and interest and
                                          allocation of losses, the Class C-M
                                          Certificates will be comprised of
                                          two components, having the
                                          designations and Initial Component
                                          Balances set forth below:

                                                              Initial Component
                                          Designation         Balance
                                          -----------         -----------------
                                          C-M- 1 Component    $20,385,000
                                          C-M-2 Component     $48,530,000

Component Certificates.................    Class C-M Certificates

Delay Certificates.....................    Group I Certificates and Group II
                                           Certificates.

ERISA-Restricted Certificates..........    The Private Certificates and
                                          Residual Certificates; and
                                          Certificates of any Class that does
                                           not or no longer has a rating of
                                          BBB- or its equivalent, or better,
                                          from at least one Rating Agency.

Group I Certificates...................    Group I Senior Certificates and
                                          Group I Subordinated Certificates.

Group I Offered Certificates...........    Group I Senior Certificates and
                                          Class B-1, Class B-2 and Class B-3
                                          Certificates

Group I Private Certificates...........    Class B-4, Class B-5, Class B-6 and
                                          Class I-P Certificates.

Group I Senior Certificates............    Class 1-A-1, Class 2-A-1, Class C-M,
                                          Class 3-A-1, Class 3-A-2 and
                                          Class A-R Certificates

Group I Subordinated Certificates......    Class B-1, Class B-2, Class B-3,
                                           Class B-4, Class B-5 and Class B-6
                                          Certificates.

Group II Certificates..................    Group II Senior Certificates and
                                          Group II Subordinated Certificates

Group II Offered Certificates..........    Group II Certificates.


                                      7
<PAGE>

Group II Private Certificates..........    Class 4-P and Class C Certificates.

Group II Senior Certificates...........     Class 4-A-1-1, Class 4-A-1-2, Class
                                          4-A-2-1 and Class 4-A-2-2
                                          Certificates.

Group II Subordinated Certificates.....    Class 4-M-1, Class 4-M-2, Class
                                           4-M-3 and Class 4-M-4 Certificates.

Group 1 Certificates...................    The Group 1 Senior Certificates and
                                          the portion of the Group I
                                          Subordinated Certificates related to
                                          Loan Group 1.

Group 1 Senior Certificates............    Class 1-A-1 and Class A-R
                                          Certificates and Class C-M-1
                                           Component.

Group 2 Certificates...................    The Group 2 Senior Certificates and
                                          the portion of the Group I
                                          Subordinated Certificates related to
                                           Loan Group 2.

Group 2 Senior Certificates............    Class 2-A-1 Certificates and Class
                                          C-M-2 Component.

Group 3 Certificates...................    The Group 3 Senior Certificates and
                                          the portion of the Group I
                                          Subordinated Certificates related to
                                          Loan Group 3.

Group 3 Senior Certificates............    Class 3-A-1 and Class 3-A-2
                                          Certificates.

LIBOR Certificates.....................    None.

Non-Delay Certificates.................    None.

Notional Amount Certificates...........    None.

Notional Amount Components.............    None.

Offered Certificates...................    All Classes of Certificates other
                                          than the Private Certificates.

Physical Certificates..................    Class A-R Certificates and Private
                                           Certificates.

Planned Principal Classes..............    None.

Principal Only Certificates............    None.

Principal Only Components..............    None.

Private Certificates...................    The Group I Private Certificates and
                                          the Group II Private Certificates

Rating Agencies........................    Moody's and S&P.

Regular Certificates...................    All Classes of Certificates other
                                           than the Class A-R Certificates.

Residual Certificate...................    Class A-R Certificates.

Targeted Principal Classes.............    None.

Targeted Principal Component...........    None.

      With respect to any of the foregoing designations as to which the
corresponding reference is "None," all defined terms and provisions in this
Agreement relating solely to such designations shall be of no force or effect,
and any calculations in this Agreement incorporating references to such
designations shall be interpreted without reference to such designations and
amounts. Defined terms and provisions in this Agreement relating to
statistical rating agencies not designated above as Rating Agencies shall be
of no force or effect.



                                      8
<PAGE>

                                  ARTICLE ONE

                                  DEFINITIONS

      Section 1.01. Definitions.

      Unless the context requires a different meaning, capitalized terms are
used in this Agreement as defined below.

      Accretion Directed Certificates:   As specified in the Preliminary
Statement.

      Accretion Direction Rule:   Not applicable.

      Accrual Amount:   Not applicable.

      Accrual Certificates:   As specified in the Preliminary Statement.

      Accrual Termination Date:   Not applicable.

      Additional Designated Information:   As defined in Section 11.02.

      Adjusted Mortgage Rate:   As to each Mortgage Loan and at any time, the
per annum rate equal to the Mortgage Rate less the Servicing Fee Rate.

      Adjusted Net Mortgage Rate: As to each Mortgage Loan and any
Distribution Date, the per annum rate equal to the Mortgage Rate of that
Mortgage Loan (as of the Due Date in the month preceding the month in which
such Distribution Date occurs) less the Expense Fee Rate for that Mortgage
Loan.

      Adjustment Date: A date specified in each Mortgage Note as a date on
which the Mortgage Rate on the related Mortgage Loan is subject to adjustment.

      Advance: As to a Loan Group, the payment required to be made by the
Servicer with respect to any Distribution Date pursuant to Section 4.01, the
amount of any such payment being equal to the aggregate of payments of
principal and interest (net of the Servicing Fee) on the Mortgage Loans in
such Loan Group that were due during the related Due Period and not received
as of the close of business on the related Determination Date, together with
an amount equivalent to interest on each REO Property, net of any net income
from such REO Property, less the aggregate amount of any such delinquent
payments that the Servicer has determined would constitute a Nonrecoverable
Advance if advanced.

      Advance Notice:   As defined in Section 4.01(b).

      Advance Deficiency:   As defined in Section 4.01(b).

      Affiliate: With respect to any Person, any other Person controlling,
controlled or under common control with such Person. For purposes of this
definition, "control" means the power to direct the management and policies of
a Person, directly or indirectly, whether through ownership of voting
securities, by contract, or otherwise and "controlling" and "controlled" shall
have meanings correlative to the foregoing. Affiliates also include any
entities consolidated with the requirements of generally accepted accounting
principles.

      Aggregate Group I Subordinated Percentage: With respect to any
Distribution Date and the Group I Subordinated Certificates, the fraction
(expressed as a percentage) the numerator of which is the


                                      9
<PAGE>


aggregate Class Certificate Balance of the Group I Subordinated Certificates
immediately prior to such Distribution Date and the denominator of which is
the aggregate Stated Principal Balance of the Mortgage Loans in Aggregate Loan
Group I as of the Due Date in the prior month after giving effect to Principal
Prepayments received in the Prepayment Period related to that Distribution
Date.

      Aggregate Loan Group: Either Aggregate Loan Group I or Aggregate Loan
Group II, as applicable.

      Aggregate Loan Group I: Collectively, Loan Group 1, Loan Group 2 and
Loan Group 3.

      Aggregate Loan Group I Cut-off Date Pool Principal Balance:
$850,156,434.72.

      Aggregate Loan Group II: Loan Group 4.

      Agreement:   This Pooling and Servicing Agreement and all amendments and
supplements.

      Allocable Share: As to any Distribution Date and Class of Group I
Certificates, the ratio that the amount calculated with respect to such
Distribution Date (A) with respect to the Group I Senior Certificates of the
related Group I Senior Certificate Group, pursuant to clause (i) of the
definition of Class Optimal Interest Distribution Amount (without giving
effect to any reduction of such amount pursuant to Section 4.02 (d)) and (B)
with respect to the Group I Subordinated Certificates, pursuant to the
definition of Assumed Interest Amount or after the second Senior Termination
Date pursuant to clause (i) of the definition of Class Optimal Interest
Distribution Amount (without giving effect to any reduction of such amount
pursuant to Section 4.02(d)) bears to the amount calculated with respect to
such Distribution Date for each Class of Group I Certificates pursuant to
clause (i) of the definition of Class Optimal Interest Distribution Amount
(without giving effect to any reduction of such amount pursuant to Section
4.02(d)) or the definition of Assumed Interest Amount for such Loan Group in
Aggregate Loan Group I and Class related to Aggregate Loan Group I, as
applicable.

      Amount Available for Senior Principal: As to any Distribution Date and
Loan Group in Aggregate Loan Group I, the related Group I Available Funds for
such Distribution Date, reduced by the aggregate amount distributable (or
allocable to the Accrual Amount, if applicable) on such Distribution Date in
respect of interest on the related Group I Senior Certificates pursuant to
Section 4.02(a)(1)(i), Section 4.02(a)(2)(i) and Section 4.02(a)(3)(i).

      Amount Held for Future Distribution: As to any Distribution Date and the
Mortgage Loans in a Loan Group, the aggregate amount held in the Certificate
Account at the close of business on the related Determination Date on account
of (i) Principal Prepayments received after the last day of the related
Prepayment Period and Liquidation Proceeds and Subsequent Recoveries relating
to the Mortgage Loans in such Loan Group received in the month of such
Distribution Date and (ii) all Scheduled Payments on the Mortgage Loans in
that Loan Group due after the related Due Date.

      Applicable Credit Support Percentage:   As defined in Section 4.02(e).

      Applied Realized Loss Amount: For any Distribution Date and the Group II
Certificates, the amount by which the aggregate Class Certificate Balance of
all Group II Certificates (after all distributions of principal on such
Distribution Date) exceeds the Group 4 Pool Principal Balance as of the Due
Date in the month of such Distribution Date (after giving effect to Principal
Prepayments and Liquidation Proceeds allocated to principal and Subsequent
Recoveries received in the related Prepayment Period).


                                      10

<PAGE>


      Appraised Value: With respect to any Mortgage Loan, the Appraised Value
of the related Mortgaged Property shall be: (i) with respect to a Mortgage
Loan other than a Refinance Loan, the lesser of (a) the value of the Mortgaged
Property based upon the appraisal made at the time of the origination of such
Mortgage Loan and (b) the sales price of the Mortgaged Property at the time of
the origination of such Mortgage Loan; and (ii) with respect to a Refinance
Loan, the value of the Mortgaged Property based upon the appraisal made at the
time of the origination of such Refinance Loan.

      Assumed Balance: With respect to any Distribution Date, Class of Group I
Subordinated Certificates and Loan Group in Aggregate Loan Group I, each such
Class' pro rata interest (based on its respective Class Certificate Balance)
in such Loan Group equal to the product of the Subordinated Percentage for
such Loan Group as of such Distribution Date and the aggregate Stated
Principal Balance of the Mortgage Loans in such Loan Group as of the Due Date
occurring in the month preceding the month of such Distribution Date (after
giving effect to Principal Prepayments received in the Prepayment Period
related to such prior Due Date).

      Assumed Interest Amount: With respect to any Distribution Date, any
Class of Group I Subordinated Certificates and any Loan Group in Aggregate
Loan Group I, one month's interest accrued during the related Interest Accrual
Period at the Pass-Through Rate on the related Assumed Balance immediately
prior to that Distribution Date.

      Bankruptcy Code:   The United States Bankruptcy Reform Act of 1978, as
amended.

      Bankruptcy Coverage Termination Date:   The point in time at which the
Bankruptcy Loss Coverage Amount is reduced to zero.

      Bankruptcy Loss: With respect to any Group I Mortgage Loan, a Deficient
Valuation or Debt Service Reduction; provided, however, that a Bankruptcy Loss
shall not be deemed a Bankruptcy Loss under this Agreement so long as the
Servicer has notified the Trustee in writing that the Servicer is diligently
pursuing any remedies that may exist in connection with the related Mortgage
Loan and either (A) the related Group I Mortgage Loan is not in default with
regard to payments due under the Group I Mortgage Loan or (B) delinquent
payments of principal and interest under the related Group I Mortgage Loan and
any related escrow payments in respect of such Group I Mortgage Loan are being
advanced on a current basis by the Servicer, in either case without giving
effect to any Debt Service Reduction or Deficient Valuation.

      Bankruptcy Loss Coverage Amount: As of any date of determination, the
Initial Bankruptcy Loss Coverage Amount as reduced by (i) the aggregate amount
of Bankruptcy Losses allocated to the Group I Certificates since the Cut-off
Date and (ii) any permissible reductions in the Bankruptcy Loss Coverage
Amount as evidenced by a letter of each Rating Agency to the Trustee to the
effect that any such reduction will not result in a downgrading, qualification
or withdrawal of the then current ratings assigned to the Classes of Group I
Certificates rated by it.

      Blanket Mortgage:   The mortgage or mortgages encumbering a Cooperative
Property.

      Book-Entry Certificates:   As specified in the Preliminary Statement.

      Business Day: Any day other than (i) a Saturday or a Sunday, or (ii) a
day on which the banking institutions in the City of New York, New York, the
State of California or the city in which the Corporate Trust Office of the
Trustee is located are authorized or obligated by law or executive order to be
closed.


                                       11

<PAGE>


      Carryover Reserve Fund: The separate Eligible Account created and
maintained by the Trustee pursuant to Section 4.06 with a depository
institution in the name of the Trustee for the benefit of the Holders of the
Group II Certificates and designated "Deutsche Bank National Trust Company, in
trust for the registered holders of IndyMac INDX Mortgage Loan Trust 2007-AR5,
Mortgage Pass-Through Certificates, Series 2007-AR5."

      Calculation Rate: For each Distribution Date, the product of (i) 10 and
(ii) the weighted average pass-through rate of the outstanding Class A and
Class B Interests, treating each of the Class A Interests as having an
Interest Rate of 0.00%.

      Certificate: Any one of the certificates issued by the Trust Fund and
executed by the Trustee in substantially the forms attached as exhibits.

      Certificate Account: The separate Eligible Account or Accounts created
and maintained by the Servicer pursuant to Section 3.06(d) with a depository
institution in the name of the Servicer for the benefit of the Trustee on
behalf of Certificateholders and designated "IndyMac Bank, F.S.B., in trust
for the registered holders of IndyMac INDX Mortgage Loan Trust 2007-AR5,
Mortgage Pass-Through Certificates, Series 2007-AR5."

      Certificate Balance: With respect to any Certificate at any date of
determination, the maximum dollar amount of principal to which the Holder
thereof is then entitled under this Agreement, such amount being equal to the
Denomination thereof (A) plus any increase in the Certificate Balance of such
Certificate pursuant to Section 4.02 due to the receipt of Subsequent
Recoveries on the Mortgage Loans in a related Loan Group, (B) minus the sum of
(i) all distributions of principal previously made with respect thereto and
(ii) all Realized Losses or Applied Realized Loss Amounts allocated to that
Certificate and, in the case of any Group I Subordinated Certificates, all
other reductions in Certificate Balance previously allocated to that
Certificate pursuant to Section 4.05 and (C) in the case of any Class of
Accrual Certificates, plus the Accrual Amount added to the Class Certificate
Balance of such Class prior to such date.

      Certificate Group: Any of the Group 1 Certificates, Group 2
Certificates, Group 3 Certificates, Group I Certificates or Group II
Certificates, as the context requires.

      Certificate Owner: With respect to a Book-Entry Certificate, the Person
who is the beneficial owner of the Book-Entry Certificate. For the purposes of
this Agreement, in order for a Certificate Owner to enforce any of its rights
under this Agreement, it shall first have to provide evidence of its
beneficial ownership interest in a Certificate that is reasonably satisfactory
to the Trustee, the Depositor and/or the Servicer, as applicable.

      Certificate Register:   The register maintained pursuant to Section 5.02.

      Certificate Registrar:   Deutsche Bank National Trust Company and its
successors and, if a successor trustee is appointed under this Agreement, the
successor.

      Certificateholder or Holder: The person in whose name a Certificate is
registered in the Certificate Register, except that, solely for the purpose of
giving any consent pursuant to this Agreement, any Certificate registered in
the name of the Depositor or any affiliate of the Depositor is not Outstanding
and the Percentage Interest evidenced thereby shall not be taken into account
in determining whether the requisite amount of Percentage Interests necessary
to effect a consent has been obtained, except that if the Depositor or its
affiliates own 100% of the Percentage Interests evidenced by a Class of
Certificates, the Certificates shall be Outstanding for purposes of any
provision of this Agreement requiring the consent of



                                      12

<PAGE>

the Holders of Certificates of a particular Class as a condition to the taking
of any action. The Trustee is entitled to rely conclusively on a certification
of the Depositor or any affiliate of the Depositor in determining which
Certificates are registered in the name of an affiliate of the Depositor.

      Certification Party:   As defined in Section 11.05.

      Certifying Person:   As defined in Section 11.05.

      Class:   All Certificates bearing the same class designation as set
forth in the Preliminary Statement.

      Class A Interest: Each of the Class A-1, Class A-2 and Class A-3
Interests.

      Class B Interest: Each of the Class B-1, Class B-2 and Class B-3
Interests.

      Class C Interest: Each of the Class C-1, Class C-2 and Class C-3
Interests.

      Class Certificate Balance:   For any Class as of any date of
determination, the aggregate of the Certificate Balances of all Certificates
of the Class as of that date.

      Class C Distributable Amount:   As defined in the Preliminary Statement.

      Class Interest Shortfall: As to any Distribution Date and Class of Group
I Certificates, the amount by which the amount described in clause (i) of the
definition of Class Optimal Interest Distribution Amount for such Class
exceeds the amount of interest actually distributed on such Class on such
Distribution Date pursuant to such clause (i).

      Class Optimal Interest Distribution Amount: With respect to any
Distribution Date and interest-bearing Class of Group I Certificates, the sum
of (i) one month's interest accrued during the related Interest Accrual Period
at the Pass-Through Rate for such Class on the related Group I Class
Certificate Balance immediately prior to such Distribution Date, subject to
reduction pursuant to Section 4.02(d), and (ii) any Class Unpaid Interest
Amounts for such Class.

      Class Subordination Percentage: With respect to any Distribution Date
and each Class of Group I Subordinated Certificates, the fraction (expressed
as a percentage) the numerator of which is the Class Certificate Balance of
such Class of Group I Subordinated Certificates immediately prior to such
Distribution Date and the denominator of which is the aggregate Class
Certificate Balance of all Classes of Group I Certificates immediately prior
to such Distribution Date.

      Class Unpaid Interest Amounts: As to any Distribution Date and Class of
interest-bearing Group I Certificates, the amount by which the aggregate Class
Interest Shortfalls for such Class on prior Distribution Dates exceeds the
amount distributed on such Class on prior Distribution Dates pursuant to
clause (ii) of the definition of Class Optimal Interest Distribution Amount.

      Closing Date:   March 29, 2007.

      CMT Index:   Not applicable.

      Code:   The Internal Revenue Code of 1986, including any successor or
amendatory provisions.

      COFI:   Not applicable.


                                      13

<PAGE>


      COFI Certificates:   Not applicable.

      Commission:   The United States Securities and Exchange Commission.

      Compensating Interest: For any Distribution Date and Aggregate Loan
Group, 0.125% multiplied by one-twelfth multiplied by the aggregate Stated
Principal Balance of the Mortgage Loans in such Aggregate Loan Group as of the
first day of the prior month.

      Component:   As specified in the Preliminary Statement.

      Component Balance: With respect to any Component and any Distribution
Date, its initial Component Balance (A) plus any increase in that Component
Balance due to the receipt of Subsequent Recoveries, (B) minus the sum of all
amounts applied in reduction of the Component Balance of that Component and
Realized Losses allocated thereto.

      Component Certificates:   As specified in the Preliminary Statement.

      Co-op Shares:   Shares issued by a Cooperative Corporation.

      Cooperative Corporation: The entity that holds title (fee or an
acceptable leasehold estate) to the real property and improvements
constituting the Cooperative Property and that governs the Cooperative
Property, which Cooperative Corporation must qualify as a Cooperative Housing
Corporation under section 216 of the Code.

      Cooperative Loan:   Any Mortgage Loan secured by Co-op Shares and a
Proprietary Lease.

      Cooperative Property: The real property and improvements owned by the
Cooperative Corporation, including the allocation of individual dwelling units
to the holders of the Co-op Shares of the Cooperative Corporation.

      Cooperative Unit:   A single family dwelling located in a Cooperative
Property.

      Corporate Trust Office: The designated office of the Trustee in the
State of California at which at any particular time its corporate trust
business with respect to this Agreement is administered, which office at the
date of the execution of this Agreement is located at 1761 East St. Andrew
Place, Santa Ana, California 92705, Attn: Mortgage Administration-IN07A5
(IndyMac MBS, Inc., IndyMac INDX Mortgage Loan Trust 2007-AR5, Mortgage
Pass-Through Certificates, Series 2007-AR5), and which is the address to which
notices to and correspondence with the Trustee should be directed. With
respect to the Certificate Registrar and presentment of Certificates for
registration of transfer, exchange or final payment is located at DB Services
Tennessee, 648 Grassmere Park Road, Nashville, Tennessee 37211-3658,
Attention: Transfer Unit.

      Cross-over Situation: For any Distribution Date and any Loan Group in
Aggregate Loan Group I (after taking into account principal distributions on
such Distribution Date) a Cross-Over Situation exists with respect to the
Class A and Class B Interests of the Loan Group if such Interests in the
aggregate are less than 1% of the Assumed Balance of the related Loan Group.

      Cumulative Loss Trigger Event: With respect to a Distribution Date on or
after the Stepdown Date, the aggregate amount of Realized Losses on the Group
4 Mortgage Loans from (and including) the Cut-off Date to (and including) the
related Due Date (reduced by the aggregate amount of Subsequent Recoveries
received on the Group 4 Mortgage Loans from the Cut-off Date through the
Prepayment




                                      14

<PAGE>

Period related to that Due Date) exceeds the applicable percentage,
for such Distribution Date, of the Group 4 Cut-off Date Pool Principal
Balance, as set forth below:

Distribution Date                   Percentage

April 2009 - March 2010..........   0.25% with respect to April 2009, plus an
                                       additional 1/12th of 0.30% for each
                                      month thereafter through March 2010

April 2010 - March 2011..........   0.55% with respect to April 2010, plus an
                                      additional 1/12th of 0.40% for each
                                      month thereafter through March 2011

April 2011 - March 2012..........   0.95% with respect to April 2011, plus an
                                      additional 1/12th of 0.45% for each
                                       month thereafter through March 2012

April 2012 - March 2013..........   1.40% with respect to April 2012, plus an
                                      additional 1/12th of 0.25% for each
                                      month thereafter through March 2013

April 2013 and thereafter........   1.65%


      Current Interest: With respect to each Class of Group II Offered
Certificates and each Distribution Date, interest accrued at the applicable
Pass-Through Rate for the applicable Interest Accrual Period on the Class
Certificate Balance of that Class immediately prior to that Distribution Date.

      Cut-off Date:   March 1, 2007.

      Cut-off Date Principal Balance:   As to any Mortgage Loan, its Stated
Principal Balance as of the close of business on the Cut-off Date.

      Debt Service Reduction: For any Mortgage Loan, a reduction by a court of
competent jurisdiction in a proceeding under the Bankruptcy Code in the
Scheduled Payment for the Mortgage Loan that became final and non-appealable,
except a reduction resulting from a Deficient Valuation or a reduction that
results in a permanent forgiveness of principal.

      Defective Mortgage Loan: Any Mortgage Loan that is required to be
repurchased pursuant to Section 2.02 or 2.03.

      Deficient Valuation: For any Mortgage Loan, a valuation by a court of
competent jurisdiction of the Mortgaged Property in an amount less than the
then outstanding indebtedness under the Mortgage Loan, or any reduction in the
amount of principal to be paid in connection with any Scheduled Payment that
results in a permanent forgiveness of principal, which valuation or reduction
results from an order of the court that is final and non-appealable in a
proceeding under the Bankruptcy Code.

       Definitive Certificates: Any Certificate evidenced by a Physical
Certificate and any Certificate issued in lieu of a Book-Entry Certificate
pursuant to Section 5.02(e).

      Delay Certificates:   As specified in the Preliminary Statement.

                                       15

<PAGE>


      Delay Delivery Certification:   A certification substantially in the
form of Exhibit G-3.

      Delay Delivery Mortgage Loans: The Mortgage Loans identified on the
Mortgage Loan Schedule for which all or a portion of a related Mortgage File
is not delivered to the Trustee by the Closing Date. The Depositor shall
deliver the Mortgage Files to the Trustee:

      (A) for at least 70% of the Mortgage Loans in each Loan Group, not later
than the Closing Date and

       (B) for the remaining 30% of the Mortgage Loans in each Loan Group, not
later than five Business Days following the Closing Date.

      To the extent that the Seller is in possession of any Mortgage File for
any Delay Delivery Mortgage Loan, until delivery of the Mortgage File to the
Trustee as provided in Section 2.01, the Seller shall hold the files as
Servicer, as agent and in trust for the Trustee.

      Deleted Mortgage Loan:   As defined in Section 2.03(c).

      Delinquency Trigger Event: With respect to any Distribution Date on or
after the Stepdown Date, if the Rolling Sixty-Day Delinquency Rate as of the
last day of the immediately preceding month equals or exceeds 40.00% of the
Senior Enhancement Percentage for that Distribution Date.

      Delinquent: A Mortgage Loan is "Delinquent" if any monthly payment due
on a Due Date is not made by the close of business on the day immediately
preceding the next scheduled Due Date for such Mortgage Loan. A Mortgage Loan
is "30 days Delinquent" if such monthly payment has not been received by the
close of business on the last day of the month in which such monthly payment
was due. The determination of whether a Mortgage Loan is "60 days Delinquent",
"90 days Delinquent", etc. shall be made in a like manner.

      Denomination: For each Certificate, the amount on the face of the
Certificate as the "Initial Certificate Balance of this Certificate" or the
"Initial Notional Amount of this Certificate" or, if neither of the foregoing,
the Percentage Interest appearing on the face of the Certificate.

      Depositor:   IndyMac MBS, Inc., a Delaware corporation, or its successor
in interest.

      Depository:   The initial Depository shall be The Depository Trust
Company, the nominee of which is CEDE & Co., as the registered Holder of the
Book-Entry Certificates.   The Depository shall at all times be a "clearing
corporation" as defined in Section 8-102(a)(5) of the UCC.

      Depository Participant: A broker, dealer, bank, or other financial
institution or other Person for whom from time to time a Depository effects
book-entry transfers and pledges of securities deposited with the Depository.

      Determination Date: As to any Distribution Date, the 18th day of each
month or if that day is not a Business Day the next Business Day, except that
if the next Business Day is less than two Business Days before the related
Distribution Date, then the Determination Date shall be the Business Day
preceding the 18th day of the month.

      Distribution Account: The separate Eligible Account created and
maintained by the Trustee pursuant to Section 3.06(e) in the name of the
Trustee for the benefit of the Certificateholders and designated "Deutsche
Bank National Trust Company in trust for registered holders of IndyMac INDX

                                      16

<PAGE>


Mortgage Loan Trust 2007-AR5, Mortgage Pass-Through Certificates, Series
2007-AR5." Funds in the Distribution Account shall be held in trust for the
Certificateholders for the uses and purposes set forth in this Agreement.

      Distribution Account Deposit Date: As to any Distribution Date, 12:30
P.M. Pacific time on the Business Day preceding the Distribution Date.

      Distribution Date: The 25th day of each calendar month after the initial
issuance of the Certificates, or if that day is not a Business Day, the next
Business Day, commencing in April 2007.

      Due Date: For any Mortgage Loan and Distribution Date, the first day of
the month in which such Distribution Date occurs.

      Due Period: For any Distribution Date, the period commencing on the
second day of the month preceding the month in which the Distribution Date
occurs and ending on the first day of the month in which the Distribution Date
occurs.

      EDGAR:   The Commission's Electronic Data Gathering, Analysis and
Retrieval system.

      Eligible Account:   Any of

      [(i) an account or accounts maintained with a federal or state chartered
depository institution or trust company the short-term unsecured debt
obligations of which (or, in the case of a depository institution or trust
company that is the principal subsidiary of a holding company, the debt
obligations of either such holding company or the depository institution or
trust company, whichever are rated higher) have (x) if Moody's is a Rating
Agency at the time amounts are held on deposit therein, the highest short-term
ratings of Moody's (which shall be Prime-1), (y) if Fitch is a Rating Agency
at the time any amounts are held on deposit therein, the highest short-term
rating of Fitch (which shall be F1 for funds held for less than 30 days, and
F1+ for funds held for longer than 30 days and less than 365 days) and (z) if
S&P is a Rating Agency at the time any amounts are held on deposit therein, a
short-term rating of at least A-2, for funds held no longer than 30 days, and,
if funds will be held longer than 30 days and less than 365 days, a short-term
rating of at least A-1+, or]

      (ii) an account or accounts in a depository institution or trust company
in which such accounts are insured by the FDIC (to the limits established by
the FDIC) and the uninsured deposits in which accounts are otherwise secured
such that, as evidenced by an Opinion of Counsel delivered to the Trustee and
to each Rating Agency, the Certificateholders have a claim with respect to the
funds in such account or a perfected first priority security interest against
any collateral (which shall be limited to Permitted Investments) securing such
funds that is superior to claims of any other depositors or creditors of the
depository institution or trust company in which such account is maintained,
or

      (iii) a trust account or accounts maintained with (a) the trust
department of a federal or state chartered depository institution or (b) a
trust company, acting in its fiduciary capacity or

      (iv) any other account acceptable to each Rating Agency.

      Eligible Accounts may bear interest, and may include, if otherwise
qualified under this definition, accounts maintained with the Trustee.

      ERISA:   The Employee Retirement Income Security Act of 1974, as amended.


                                      17

<PAGE>


      ERISA-Qualifying Underwriting: A best efforts or firm commitment
underwriting or private placement that meets the requirements of the
Underwriter's Exemption.

      ERISA-Restricted Certificate: As specified in the Preliminary Statement.

      Escrow Account: The Eligible Account or Accounts established and
maintained pursuant to Section 3.07(a).

      Event of Default:   As defined in Section 7.01.

      Excess Cashflow: With respect to the Group II Certificates and any
Distribution Date, (i) the Interest Remittance Amount remaining after the
distribution of interest to the Holders of the Group II Certificates for that
Distribution Date, (ii) the Overcollateralization Release Amount and (iii) any
Principal Distribution Amount for that Distribution Date remaining after
distributions of the principal to the Group 4 Offered Certificates.

      Excess Loss: The amount of any (i) Fraud Loss on the Mortgage Loans in
Aggregate Loan Group I realized after the Fraud Loss Coverage Termination
Date, (ii) Special Hazard Loss on the Mortgage Loans in Aggregate Loan Group I
realized after the Special Hazard Coverage Termination Date or (iii)
Bankruptcy Loss on the Mortgage Loans in Aggregate Loan Group I realized after
the Bankruptcy Coverage Termination Date.

      Excess Proceeds:   For any Liquidated Mortgage Loan, the excess of

      (a) all Liquidation Proceeds from the Mortgage Loan received in the
calendar month in which the Mortgage Loan became a Liquidated Mortgage Loan,
net of any amounts previously reimbursed to the Servicer as Nonrecoverable
Advances with respect to the Mortgage Loan pursuant to Section 3.09(a)(iii),
over

      (b) the sum of (i) the unpaid principal balance of the Liquidated
Mortgage Loan as of the Due Date in the month in which the Mortgage Loan
became a Liquidated Mortgage Loan plus (ii) accrued interest at the Mortgage
Rate from the Due Date for which interest was last paid or advanced (and not
reimbursed) to Certificateholders up to the Due Date applicable to the
Distribution Date following the calendar month during which the liquidation
occurred.

      Exchange Act: The Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder.

      Exchange Act Reports: Any reports on Form 10-D, Form 8-K and Form 10-K
required to be filed by the Depositor with respect to the Trust Fund under the
Exchange Act.

      Expense Fee Rate: As to each Mortgage Loan, the sum of (a) the related
Servicing Fee Rate and (b) the Trustee Fee Rate.

      Expense Fees: With respect to any Distribution Date, the sum of the
Servicing Fees and the Trustee Fees paid on that Distribution Date.

      Extra Principal Distribution Amount: For any Distribution Date, the
lesser of (x) the Overcollateralization Deficiency Amount for that
Distribution Date and (y) the Excess Cashflow for that Distribution Date.


                                      18

<PAGE>


      FDIC:   The Federal Deposit Insurance Corporation and any successor
thereto.

      FHLMC: The Federal Home Loan Mortgage Corporation, a corporate
instrumentality of the United States created and existing under Title III of
the Emergency Home Finance Act of 1970, as amended, or any successor thereto.

      Fitch: Fitch, Inc., or any successor thereto. If Fitch is designated as
a Rating Agency in the Preliminary Statement, for purposes of Section 10.05(b)
the address for notices to Fitch shall be Fitch, Inc., One State Street Plaza,
New York, NY 10004, Attention: MBS Monitoring - IndyMac 2007-AR5, or any other
address Fitch furnishes to the Depositor and the Servicer.

      FNMA: The Federal National Mortgage Association, a federally chartered
and privately owned corporation organized and existing under the Federal
National Mortgage Association Charter Act, or any successor thereto.

      Form 10-D Disclosure Item: With respect to any Person, any material
litigation or governmental proceedings pending against such Person, or against
any of the Trust Fund, the Depositor, the Trustee or the Servicer, if such
Person has actual knowledge thereof.

      Form 10-K Disclosure Item: With respect to any Person, (a) Form 10-D
Disclosure Item, and (b) any affiliations or relationships between such Person
and any Item 1119 Party.

      Fraud Loan: A Liquidated Mortgage Loan as to which a Fraud Loss has
occurred.

      Fraud Loss Coverage Amount: With respect to the Group I Certificates, as
of the Closing Date, $25,504,693, subject to reduction from time to time, by
the amount of Fraud Losses allocated to the Group I Certificates. In addition,
on each anniversary of the Cut-off Date, the Fraud Loss Coverage Amount will
be reduced as follows: (a) on the first, second, third and fourth
anniversaries of the Cut-off Date, to an amount equal to the lesser of (i)
2.00% of the then current Stated Principal Balance of the Mortgage Loans in
Aggregate Loan Group I in the case of the first anniversary and 1.00% of the
then-current Stated Principal Balance of the Mortgage Loans in Aggregate Loan
Group I in the case of the second, third and fourth such anniversaries and
(ii) the excess of the Fraud Loss Coverage Amount as of the preceding
anniversary of the Cut-off Date over the cumulative amount of Fraud Losses
allocated to the Group I Certificates since such preceding anniversary; and
(b) on the fifth anniversary of the Cut-off Date, to zero.

      Fraud Loss Coverage Termination Date: The point in time at which the
Fraud Loss Coverage Amount is reduced to zero.

      Fraud Losses: Realized Losses on Mortgage Loans in Aggregate Loan Group
I as to which a loss is sustained by reason of a default arising from fraud,
dishonesty or misrepresentation in connection with the related Mortgage Loan,
including a loss by reason of the denial of coverage under any related Primary
Insurance Policy because of such fraud, dishonesty or misrepresentation.

      Gross Margin: With respect to each Mortgage Loan, the fixed percentage
set forth in the related Mortgage Note that is added to the Mortgage Index on
each Adjustment Date in accordance with the terms of the related Mortgage Note
used to determine the Mortgage Rate for such Mortgage Loan.

      Group 1 Certificates: As specified in the Preliminary Statement.

      Group 1 Mortgage Loan:   Any Mortgage Loan in Loan Group 1.


                                      19

<PAGE>


      Group 1 Senior Certificates:   As specified in the Preliminary Statement.

      Group 2 Certificates:   As specified in the Preliminary Statement.

      Group 2 Mortgage Loan:   Any Mortgage Loan in Loan Group 2.

      Group 2 Senior Certificates:   As specified in the Preliminary Statement.

      Group 3 Certificates:   As specified in the Preliminary Statement.

      Group 3 Mortgage Loan:   Any Mortgage Loan in Loan Group 3.

      Group 3 Senior Certificates:   As specified in the Preliminary Statement.

      Group 4 Cut-off Date Pool Principal Balance:   $422,171,409.08.

      Group 4 Mortgage Loan:   Any Mortgage Loan in Loan Group 4.

      Group 4 Pool Principal Balance:   The aggregate Stated Principal Balance
of the Group 4 Mortgage Loans.

      Group I Available Funds: As to any Distribution Date and the Mortgage
Loans in a Loan Group in Aggregate Loan Group I, the sum of (a) the aggregate
amount held in the Certificate Account at the close of business on the related
Determination Date, including any Subsequent Recoveries with respect to the
Mortgage Loans in that Loan Group, net of the Amount Held for Future
Distribution, net of Prepayment Charges and net of amounts permitted to be
withdrawn from the Certificate Account pursuant to clauses (i) - (viii),
inclusive, of Section 3.09(a) and amounts permitted to be withdrawn from the
Distribution Account pursuant to clauses (i) - (iii), inclusive, of Section
3.09(b), (b) the amount of the related Advance, (c) in connection with
Defective Mortgage Loans in such Loan Group, as applicable, the aggregate of
the Purchase Prices and Substitution Adjustment Amounts deposited on the
related Distribution Account Deposit Date, and (d) any amount deposited on the
related Distribution Account Deposit Date pursuant to Section 3.10. The
Holders of the Class I-P-1 and Class I-P-2 Certificates will be entitled to
all Prepayment Charges received on the Mortgage Loans in Aggregate Loan Group
I and such amounts will not be available for distribution to the Holders of
any other Class of Certificates.

      Group I Certificates: As specified in the Preliminary Statement.

      Group I Mortgage Loans: The Group 1 Mortgage Loans, the Group 2 Mortgage
Loans and the Group 3 Mortgage Loans.

      Group I Offered Certificates: As specified in the Preliminary Statement.

      Group I Senior Certificates: As specified in the Preliminary Statement.

      Group I Subordinated Certificates: As specified in the Preliminary
Statement.

      Group I Pool Principal Balance:   The aggregate Stated Principal Balance
of the Group 1 Mortgage Loans, Group 2 Mortgage Loans and Group 3 Mortgage
Loans.

      Group II Certificates:   As specified in the Preliminary Statement.

      Group II Offered Certificates:   As specified in the Preliminary
Statement.


                                      20

<PAGE>

      Group II Senior Certificates:   As specified in the Preliminary
Statement.

      Group II Senior Principal Distribution Amount: For any Distribution Date
an amount equal to the excess, if any, of (x) the aggregate Class Certificate
Balance of the Classes of Group II Senior Certificates immediately prior to
that Distribution Date over (y) the Senior Target Amount for that Distribution
Date.

      Group II Subordinated Certificates: As specified in the Preliminary
Statement.

      Hard Prepayment Charges: As to a Mortgage Loan, any charge payable by a
Mortgagor in connection with certain partial prepayments and all prepayments
in full made within the related Prepayment Charge Period, the Hard Prepayment
Charges with respect to each applicable Mortgage Loan so held by the Trust
Fund being identified in the Mortgage Loan Schedule.

      Indirect Participant: A broker, dealer, bank, or other financial
institution or other Person that clears through or maintains a custodial
relationship with a Depository Participant.

      Initial Bankruptcy Loss Coverage Amount: As to the Group I Certificates,
$100,000.

      Initial LIBOR Rate: Not applicable.

      Insurance Policy: For any Mortgage Loan included in the Trust Fund, any
insurance policy, including all riders and endorsements thereto in effect,
including any replacement policy or policies for any Insurance Policies.

      Insurance Proceeds: Proceeds paid by an insurer pursuant to any
Insurance Policy, in each case other than any amount included in such
Insurance Proceeds in respect of Insured Expenses.

      Insured Expenses: Expenses covered by an Insurance Policy or any other
insurance policy with respect to the Mortgage Loans.

      Interest Accrual Period: With respect to each Class of Delay
Certificates and any Distribution Date, the calendar month prior to the month
of such Distribution Date. With respect to each Class of Non-Delay
Certificates and any Distribution Date, the period commencing on the
Distribution Date in the month prior to the month in which that Distribution
Date occurs (or the Closing Date, in the case of the first Distribution Date)
and ending on the day preceding the applicable Distribution Date. All Delay
Certificates will accrue interest on the basis of a 360-day year consisting of
twelve 30-day months. The Non-Delay Certificates will accrue interest on the
basis of a 360-day year and the actual number of days during the related
Interest Accrual Period.

      Interest Carry Forward Amount: With respect to each Class of Group II
Offered Certificates and each Distribution Date, the sum of the excess of (i)
(a) the Interest Distribution Amount for that Class with respect to prior
Distribution Dates, over (b) the amount actually distributed to that Class
with respect to interest on prior Distribution Dates and (ii) interest for the
applicable Interest Accrual Period on the amount described above based on the
Pass-Through Rate for that Class of Group II Offered Certificates.

      Interest Determination Date: With respect to (a) any Interest Accrual
Period for a Class of Group II Offered Certificates and (b) any Interest
Accrual Period for the COFI Certificates for which the applicable Index is
LIBOR, the second Business Day prior to the first day of such Interest Accrual
Period.



                                      21

<PAGE>


      Interest Distribution Amount: With respect to each Class of Group II
Offered Certificates and any Distribution Date, the Current Interest for that
Class minus the Class's share of Net Interest Shortfalls.

      Interest Funds: With respect to any Distribution Date, the Interest
Remittance Amount minus the Trustee Fee for the Group 4 Mortgage Loans for
that Distribution Date.

      Interest Rate: With respect to each REMIC 1A Interest or REMIC 1B
Interest, the applicable rate set forth or calculated in the manner described
in the Preliminary Statement.

      Interest Remittance Amount:   With respect to Loan Group 4 and any
Distribution Date is :

            (a) the sum, without duplication, of:

                  (1) all interest on the Group 4 Mortgage Loans due on the
            related Due Date and received on or prior to the related
            Determination Date, less the related Servicing Fee and the
            interest premium for any Lender PMI Loan in Loan Group 4,

                  (2) all interest on Principal Prepayments on the Group 4
            Mortgage Loans, other than Prepayment Interest Excess,

                  (3) all Advances on the Group 4 Mortgage Loans relating to
            interest,

                  (4) amounts paid by the Servicer in respect of Compensating
            Interest relating to the Group 4 Mortgage Loans, and

                  (5) Liquidation Proceeds on the Group 4 Mortgage Loans
            received during the related Prepayment Period (to the extent such
            Liquidation Proceeds relate to interest), and

            minus

            (b) all Advances relating to interest on the Group 4 Mortgage
      Loans and certain expenses attributable to Loan Group 4 reimbursed since
      the prior Due Date.

      Interest Settlement Rate:   As defined in Section 4.08.

      Item 1119 Party: The Depositor, the Seller, the Servicer, the Trustee
and any other material transaction party, as identified in Exhibit T, as
updated pursuant to Section 11.04.

      Latest Possible Maturity Date: The Distribution Date, determined as of
the Closing Date, following the third anniversary of the later of: (i) the
scheduled maturity date of the Mortgage Loan having the latest scheduled
maturity date as of the Cut-off Date, and (ii) the latest possible maturity of
any Substitute Mortgage Loan that may be substituted for any Mortgage Loan
pursuant to this Agreement.

      Lender PMI Loans: Mortgage Loans with respect to which the lender rather
than the borrower acquired the primary mortgage guaranty insurance and charged
the related borrower an interest premium.

      LIBOR: The London interbank offered rate for six-month United States
dollar deposits calculated in the manner described in Section 4.08.

      LIBOR Certificates: As specified in the Preliminary Statement.


                                      22

<PAGE>


      LIBOR Determination Date: For any Interest Accrual Period after the
Distribution Date in March 2017, the second London Business Day prior to the
commencement of such Interest Accrual Period.

      Limited Exchange Act Reporting Obligations: The obligations of the
Servicer under Section 3.17(b), Section 6.02 and Section 6.04 with respect to
notice and information to be provided to the Depositor and Article 11 (except
Section 11.07(a)(i) and (ii)).

      Liquidated Mortgage Loan: For any Distribution Date, a defaulted
Mortgage Loan (including any REO Property) that was liquidated in the calendar
month preceding the month of the Distribution Date and as to which the
Servicer has certified (in accordance with this Agreement) that it has
received all amounts it expects to receive in connection with the liquidation
of the Mortgage Loan, including the final disposition of an REO Property.

      Liquidation Proceeds: Amounts, including Insurance Proceeds regardless
of when received, received in connection with the partial or complete
liquidation of defaulted Mortgage Loans, whether through trustee's sale,
foreclosure sale, or otherwise or amounts received in connection with any
condemnation or partial release of a Mortgaged Property, and any other
proceeds received in connection with an REO Property, less the sum of related
unreimbursed Servicing Fees, Servicing Advances, and Advances.

      Loan Group:   Any of Loan Group 1, Loan Group 2, Loan Group 3 and Loan
Group 4, as applicable.

      Loan Group 1:   All Mortgage Loans identified as Group 1 Mortgage Loans
on the Mortgage Loan Schedule.

      Loan Group 2:   All Mortgage Loans identified as Group 2 Mortgage Loans
on the Mortgage Loan Schedule.

      Loan Group 3:   All Mortgage Loans identified as Group 3 Mortgage Loans
on the Mortgage Loan Schedule.

      Loan Group 4:   All Mortgage Loans identified as Group 4 Mortgage Loans
on the Mortgage Loan Schedule.

      Loan-to-Value Ratio: For any Mortgage Loan and as of any date of
determination, is the fraction whose numerator is the original principal
balance of the related Mortgage Loan at that date of determination and whose
denominator is the Appraised Value of the related Mortgaged Property.

      London Business Day: Any day on which dealings in deposits of United
States dollars are transacted in the London interbank market.

      Lost Mortgage Note: Any Mortgage Note the original of which was
permanently lost or destroyed and has not been replaced.

      Maintenance: For any Cooperative Unit, the rent paid by the Mortgagor to
the Cooperative Corporation pursuant to the Proprietary Lease.

      Maximum Mortgage Rate: For each Mortgage Loan, the percentage set forth
in the related Mortgage Note as the lifetime maximum Mortgage Rate to which
such Mortgage Rate may be adjusted.



                                      23

<PAGE>


      MERS:   Mortgage Electronic Registration Systems, Inc., a corporation
organized and existing under the laws of the State of Delaware, or any
successor thereto.

      MERS Mortgage Loan:   Any Mortgage Loan registered with MERS on the
MERS(R) System.

      MERS(R) System: The system of recording transfers of mortgages
electronically maintained by MERS.

      MIN:   The mortgage identification number for any MERS Mortgage Loan.

      Minimum Mortgage Rate: For each Mortgage Loan, the percentage set forth
in the related Mortgage Note as the lifetime minimum Mortgage Rate to which
such Mortgage Rate may be adjusted.

      MOM Loan: Any Mortgage Loan as to which MERS is acting as mortgagee,
solely as nominee for the originator of such Mortgage Loan and its successors
and assigns.

      Monthly Statement:   The statement delivered to the Certificateholders
pursuant to Section 4.06.

      Moody's:   Moody's Investors Service, Inc., or any successor thereto.
If Moody's is designated as a Rating Agency in the Preliminary Statement, for
purposes of Section 10.05(b) the address for notices to Moody's shall be
Moody's Investors Service, Inc., 99 Church Street, New York, New York 10007,
Attention:   Residential Loan Monitoring Group, or any other address that
Moody's furnishes to the Depositor and the Servicer.

      Mortgage: The mortgage, deed of trust, or other instrument creating a
first lien on an estate in fee simple or leasehold interest in real property
securing a Mortgage Note.

      Mortgage File: The mortgage documents listed in Section 2.01 pertaining
to a particular Mortgage Loan and any additional documents delivered to the
Trustee to be added to the Mortgage File pursuant to this Agreement.

      Mortgage Index:   One-Year CMT Index, Six-Month LIBOR Index or One-Year
LIBOR Index.

      Mortgage Loans: Such of the mortgage loans transferred and assigned to
the Trustee pursuant to this Agreement, as from time to time are held as a
part of the Trust Fund (including any REO Property), the Mortgage Loans so
held being identified on the Mortgage Loan Schedule, notwithstanding
foreclosure or other acquisition of title of the related Mortgaged Property.

      Mortgage Loan Schedule: As of any date, the list set forth in Schedule I
of Mortgage Loans included in the Trust Fund on that date. The Mortgage Loan
Schedule shall be prepared by the Seller and shall set forth the following
information with respect to each Mortgage Loan by Loan Group:

            (i)    the loan number;

            (ii)   the street address of the Mortgaged Property, including the
                  zip code;

            (iii) the maturity date;

            (iv)   the original principal balance;

            (v)    the Cut-off Date Principal Balance;



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<PAGE>


            (vi)   the first payment date of the Mortgage Loan;

            (vii) the Scheduled Payment in effect as of the Cut-off Date;

            (viii) the Gross Margin in effect as of the Cut-off Date;

            (ix)   the Maximum Mortgage Rate in effect as of the Cut-off Date;

            (x)    the Adjustment Date in effect as of the Cut-off Date;

            (xi)   a code indicating the Mortgage Index and when it is
                  determined;

            (xii) the Loan-to-Value Ratio at origination;

            (xiii) a code indicating whether the residential dwelling at the
                  time of origination was represented to be owner-occupied;

            (xiv) a code indicating whether the residential dwelling is either
                  (a) a detached single family dwelling, (b) a dwelling in a
                  PUD, (c) a condominium unit, (d) a two- to four-unit
                  residential property, or (e) a Cooperative Unit;

            (xv)   the Mortgage Rate in effect as of the Cut-off Date;

            (xvi) the purpose for the Mortgage Loan;

            (xvii) the type of documentation program pursuant to which the
                  Mortgage Loan was originated;

            (xviii) a code indicating whether the Mortgage Loan is a
                  borrower-paid mortgage insurance loan;

            (xix) the Servicing Fee Rate;

            (xx)   a code indicating whether the Mortgage Loan is a Lender PMI
                  Loan;

            (xxi) the coverage amount of any mortgage insurance;

            (xxii) with respect to the Lender PMI Loans, the interest premium
                  charged by the lender;

            (xxiii) a code indicating whether the Mortgage Loan is a Delay
                  Delivery Mortgage Loan;

            (xxiv) the Minimum Mortgage Rate in effect as of the Cut-off Date;

            (xxv) a code indicating whether the Mortgage Loan is a MERS
                  Mortgage Loan.; and

            (xxvi) the type of Prepayment Charge (Hard or Soft), amount due
                  and the length of time during which Prepayment Charges will
                  be imposed on a Mortgage Loan.

The schedule shall also set forth the total of the amounts described under (v)
above for all of the Mortgage Loans and for each Loan Group and Aggregate Loan
Group.


                                       25


<PAGE>

      Mortgage Note: The original executed note or other evidence of the
indebtedness of a Mortgagor under a Mortgage Loan.

      Mortgage Rate: The annual rate of interest borne by a Mortgage Note from
time to time (net of the interest premium for any Lender PMI Loan).

      Mortgaged Property: The underlying property securing a Mortgage Loan,
which, with respect to a Cooperative Loan, is the related Co-op Shares and
Proprietary Lease.

      Mortgagor:   The obligors on a Mortgage Note.

      National Cost of Funds Index:   The National Monthly Median Cost of
Funds Ratio to SAIF-Insured Institutions published by the OTS.

      Net Interest Shortfall: As to any Class of Group II Certificates and
any Distribution Date, the sum of

   (i) any Net Prepayment Interest Shortfalls related to Group 4 Mortgage
   Loans for that Distribution Date; and

   (ii) the amount of interest that would otherwise have been received with
   respect to any Group 4 Mortgage Loan that was the subject of a Relief Act
   Reduction.

      Net Prepayment Interest Shortfall: As to any Distribution Date and Loan
Group, the amount by which the aggregate of the Prepayment Interest Shortfalls
for such Loan Group exceeds an amount equal to the sum of the Compensating
Interest allocable to such Loan Group for such Distribution Date and in the
case of Aggregate Loan Group I, the excess, if any, of the Prepayment Interest
Shortfalls for such other Loan Groups in Aggregate Loan Group I and
Distribution Date over the Compensating Interest allocable to the other Loan
Groups in Aggregate Loan Group I for such Distribution Date.

      Net Rate Cap: For each Distribution Date and the Group II Offered
Certificates, the Weighted Average Adjusted Net Mortgage Rate of the Group 4
Mortgage Loans for that Distribution Date.

      Net Rate Carryover: For a Class of Group II Offered Certificates on any
Distribution Date, the excess of:

            (1) the amount of interest that Class would have accrued for that
      Distribution Date had the Pass-Through Rate for that Class and the
      related Interest Accrual Period not been calculated based on the Net
      Rate Cap, over

            (2) the amount of interest that Class accrued on that Distribution
      Date based on the Net Rate Cap,


plus the unpaid portion of any excess from prior Distribution Dates (and
interest accrued thereon at the then applicable Pass-Through Rate, without
giving effect to the Net Rate Cap).

      Non-Delay Certificates: As specified in the Preliminary Statement.

      Nonrecoverable Advance: Any portion of an Advance previously made or
proposed to be made by the Servicer, that, in the good faith judgment of the
Servicer, will not be ultimately recoverable by the Servicer from the related
Mortgagor, related Liquidation Proceeds or otherwise.


                                      26

<PAGE>


      Notice of Final Distribution: The notice to be provided pursuant to
Section 9.02 to the effect that final distribution on any of the Certificates
shall be made only upon presentation and surrender thereof.

      Notional Amount:   Not applicable.

      Notional Amount Certificates:   As specified in the Preliminary
Statement.

      Notional Amount Components:   As specified in the Preliminary Statement.

      OC Floor: An amount equal to 0.50% of the Group 4 Cut-off Date Pool
Principal Balance.

      Offered Certificates: Either of the Group I Offered Certificates or the
Group II Offered Certificates, as applicable.

      Officer's Certificate: A certificate (i) signed by the Chairman of the
Board, the Vice Chairman of the Board, the President, a Managing Director, a
Vice President (however denominated), an Assistant Vice President, the
Treasurer, the Secretary, or one of the Assistant Treasurers or Assistant
Secretaries of the Depositor or the Servicer, or (ii) if provided for in this
Agreement, signed by a Servicing Officer, as the case may be, and delivered to
the Depositor and the Trustee as required by this Agreement or (iii) in the
case of any other Person, signed by an authorized officer of such Person.

      One-Year CMT Index: The weekly average yield on United States Treasury
securities adjusted to a constant maturity of one year as published by the
Federal Reserve Board in Statistical Release H.15(519) and most recently
available as of a day specified in the related Mortgage Note.

      One-Year LIBOR Index: The average of the London interbank offered rates
for one-year U.S. dollar deposits in the London market, generally as set forth
in either The Wall Street Journal or some other source generally accepted in
the residential mortgage loan origination business and specified in the
related Mortgage Note, or, if such rate ceases to be published in The Wall
Street Journal or becomes unavailable for any reason, then based upon a new
index selected by the servicer, based on comparable information, in each case,
as most recently announced as of either 45 days prior to, or the first
Business Day of the month immediately preceding the month of, such Adjustment
Date.

      Opinion of Counsel: For the interpretation or application of the REMIC
Provisions, a written opinion of counsel who (i) is in fact independent of the
Depositor and the Servicer, (ii) does not have any direct financial interest
in the Depositor or the Servicer or in any affiliate of either, and (iii) is
not connected with the Depositor or the Servicer as an officer, employee,
promoter, underwriter, trustee, partner, director, or person performing
similar functions. Otherwise, a written opinion of counsel who may be counsel
for the Depositor or the Servicer, including in-house counsel, reasonably
acceptable to the Trustee.

      Optional Termination Date:   As defined in Section 9.01.

      Original Applicable Credit Support Percentage:   With respect to each
Class of Group I Subordinated Certificates, the corresponding percentage set
forth below:



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<PAGE>


                  Class B-1......................    8.20%
                   Class B-2......................    5.65%
                  Class B-3......................    3.70%
                  Class B-4......................    2.25%
                  Class B-5......................    1.30%
                  Class B-6......................    0.55%


      Original Mortgage Loan:   The Mortgage Loan refinanced in connection
with the origination of a Refinance Loan.

      Original Subordinated Principal Balance: As to any Distribution Date and
Loan Group in Aggregate Loan Group I on or prior to the second Senior
Termination Date, the Subordinated Percentage of the aggregate Stated
Principal Balance of the Mortgage Loans in that Loan Group, in each case as of
the Cut-off Date; or if such date is after the second Senior Termination Date,
the aggregate Class Certificate Balance of the Group I Subordinated
Certificates as of the Closing Date.

      OTS:   The Office of Thrift Supervision.

      Outside Reference Date:   Not applicable.

      Outstanding:   For the Certificates as of any date of determination, all
Certificates theretofore executed and authenticated under this Agreement
except:

            (i)    Certificates theretofore canceled by the Trustee or
                  delivered to the Trustee for cancellation; and

             (ii)   Certificates in exchange for which or in lieu of which other
                  Certificates have been executed and delivered by the Trustee
                  pursuant to this Agreement.

      Outstanding Mortgage Loan: As of any Due Date, a Mortgage Loan with a
Stated Principal Balance greater than zero that was not the subject of a
Principal Prepayment in Full before the Due Date or during the related
Prepayment Period and that did not become a Liquidated Mortgage Loan before
the Due Date.

       Overcollateralization Deficiency Amount: For any Distribution Date, the
amount, if any, by which the Overcollateralization Target Amount exceeds the
Overcollateralized Amount on that Distribution Date (after giving effect to
distributions of the Principal Remittance Amount on that Distribution Date).

      Overcollateralization Release Amount: With respect to the Group II
Offered Certificates and any Distribution Date, an amount equal to the lesser
of (x) the Principal Remittance Amount for that Distribution Date and (y) the
amount, if any, by which the Overcollateralized Amount for that date
(calculated for this purpose on the basis of the assumption that 100% of the
Principal Remittance Amount for that date is applied in reduction of the Class
Certificate Balances of the Group II Offered Certificates) exceeds the
Overcollateralization Target Amount for that date.

      Overcollateralization Target Amount: With respect to the Group II
Offered Certificates and any Distribution Date, (a) prior to the Stepdown
Date, 1.05% of the Group 4 Cut-off Date Pool Principal Balance and (b) on or
after the Stepdown Date, (1) if a Trigger Event is not in effect the greater
of (x) 2.10% of the aggregate Stated Principal Balance of the Group 4 Mortgage
Loans as of the Due Date in the


                                      28

<PAGE>


month of that Distribution Date (after giving effect to Principal Prepayments
received in the related Prepayment Period) and (y) the OC Floor, and (2) if a
Trigger Event is in effect, the Overcollateralization Target Amount as in
effect for the prior Distribution Date.

      Overcollateralized Amount: For any Distribution Date, the amount, if
any, by which (x) the Group 4 Pool Principal Balance as of the Due Date in the
month of that Distribution Date (after giving effect to Principal Prepayments
on the Group 4 Mortgage Loans, the principal portion of any Liquidation
Proceeds and any Subsequent Recoveries on the Group 4 Mortgage Loans received
in the related Prepayment Period) exceeds (y) the aggregate Class Certificate
Balance of the Group II Offered Certificates (after giving effect to
distributions of the Principal Distribution Amount (excluding the Extra
Principal Distribution Amount) on that Distribution Date).

      Ownership Interest: As to any Residual Certificate, any ownership
interest in the Certificate including any interest in the Certificate as its
Holder and any other interest therein, whether direct or indirect, legal or
beneficial.

      Pass-Through Rate: For each Class of Certificates, the per annum rate
set forth or calculated in the manner described in the Preliminary Statement.

      Percentage Interest: As to any Certificate, the percentage interest
evidenced thereby in distributions required to be made on the related Class,
the percentage interest being set forth on its face or equal to the percentage
obtained by dividing the Denomination of the Certificate by the aggregate of
the Denominations of all Certificates of the same Class. With respect to the
Class C, Class P and Class A-R Certificates, the portion of the Class
evidenced thereby, expressed as a percentage, as stated on the face of such
Certificate.

      Performance Certification:   As defined in Section 11.05.

      Permitted Investments:   At any time, any of the following:

      (i) obligations of the United States or any agency thereof backed by the
full faith and credit of the United States;

      (ii) general obligations of or obligations guaranteed by any state of
the United States or the District of Columbia receiving the highest long-term
debt rating of each Rating Agency, or any lower rating that will not result in
the downgrading, qualification or withdrawal of the ratings then assigned to
the Certificates by the Rating Agencies, as evidenced by a signed writing
delivered by each Rating Agency;

      (iii) commercial or finance company paper that is then receiving the
highest commercial or finance company paper rating of each Rating Agency, or
any lower rating that will not result in the downgrading, qualification or
withdrawal of the ratings then assigned to the Certificates by the Rating
Agencies , as evidenced by a signed writing delivered by each Rating Agency;

      (iv) certificates of deposit, demand or time deposits, or bankers'
acceptances issued by any depository institution or trust company incorporated
under the laws of the United States or of any state thereof and subject to
supervision and examination by federal or state banking authorities, provided
that the commercial paper or long-term unsecured debt obligations of the
depository institution or trust company (or in the case of the principal
depository institution in a holding company system, the commercial paper or
long-term unsecured debt obligations of the holding company, but only if
Moody's is not a Rating Agency) are then rated one of the two highest
long-term and the highest short-term ratings

                                      29

<PAGE>



of each Rating Agency for the securities, or any lower rating that will not
result in the downgrading, qualification or withdrawal of the ratings then
assigned to the Certificates by the Rating Agencies, as evidenced by a signed
writing delivered by each Rating Agency;

      (v) demand or time deposits or certificates of deposit issued by any
bank or trust company or savings institution to the extent that the deposits
are fully insured by the FDIC;

      (vi) guaranteed reinvestment agreements issued by any bank, insurance
company, or other corporation acceptable to the Rating Agencies at the time of
the issuance of the agreements, as evidenced by a signed writing delivered by
each Rating Agency;

      (vii) repurchase obligations with respect to any security described in
clauses (i) and (ii) above, in either case entered into with a depository
institution or trust company (acting as principal) described in clause (iv)
above; provided that such repurchase obligation would be accounted for as a
financing arrangement under generally accepted accounting principles;

      (viii) securities (other than stripped bonds, stripped coupons, or
instruments sold at a purchase price in excess of 115% of their face amount)
bearing interest or sold at a discount issued by any corporation incorporated
under the laws of the United States or any state thereof that, at the time of
the investment, have one of the two highest ratings of each Rating Agency
(except if the Rating Agency is Moody's the rating shall be the highest
commercial paper rating of Moody's for the securities), or any lower rating
that will not result in the downgrading, qualification or withdrawal of the
ratings then assigned to the Certificates by the Rating Agencies, as evidenced
by a signed writing delivered by each Rating Agency and that have a maturity
date occurring no more than 365 days from their date of issuance;

      (ix) units of a taxable money-market portfolio having the highest rating
assigned by each Rating Agency (except (i) if Fitch is a Rating Agency and has
not rated the portfolio, the highest rating assigned by Moody's and (ii) if
S&P is a Rating Agency, "AAAm" or "AAAM-G" by S&P) and restricted to
obligations issued or guaranteed by the United States of America or entities
whose obligations are backed by the full faith and credit of the United States
of America and repurchase agreements collateralized by such obligations; and

      (x) any other investments bearing interest or sold at a discount
acceptable to each Rating Agency that will not result in the downgrading,
qualification or withdrawal of the ratings then assigned to the Certificates
by the Rating Agencies, as evidenced by a signed writing delivered by each
Rating Agency.

      No Permitted Investment may (i) evidence the right to receive
interest-only payments with respect to the obligations underlying the
instrument, (ii) be sold or disposed of before its maturity or (iii) be any
obligation of the Seller or any of its Affiliates. Any Permitted Investment
shall be relatively risk free and no options or voting rights shall be
exercised with respect to any Permitted Investment. Any Permitted Investment
shall be sold or disposed in accordance with Financial Accounting Standard
140, paragraph 35c(6) in effect as of the Closing Date.

      Permitted Transferee:   Any person other than

      (i) the United States, any State or political subdivision thereof, or
any agency or instrumentality of any of the foregoing,

      (ii) a foreign government, International Organization, or any agency or
instrumentality of either of the foregoing,



                                      30

<PAGE>


      (iii) an organization (except certain farmers' cooperatives described in
section 521 of the Code) that is exempt from tax imposed by Chapter 1 of the
Code (including the tax imposed by section 511 of the Code on unrelated
business taxable income) on any excess inclusions (as defined in section
860E(c)(1) of the Code) with respect to any Residual Certificate,

      (iv) a rural electric and telephone cooperatives described in section
1381(a)(2)(C) of the Code,

      (v) an "electing large partnership" as defined in section 775 of the
Code,

      (vi) a Person that is not a U.S. Person, and

      (vii) any other Person so designated by the Depositor based on an
Opinion of Counsel that the Transfer of an Ownership Interest in a Residual
Certificate to the Person may cause any REMIC to fail to qualify as a REMIC at
any time that the Certificates are outstanding.

      Person: Any individual, corporation, partnership, joint venture,
association, limited liability company, joint-stock company, trust,
unincorporated organization, or government, or any agency or political
subdivision thereof.

      Physical Certificates:   As specified in the Preliminary Statement.

      Plan: An "employee benefit plan" as defined in section 3(3) of ERISA
that is subject to Title I of ERISA, a "plan" as defined in section 4975 of
the Code that is subject to section 4975 of the Code, or any Person investing
on behalf of or with plan assets (as defined in 29 CFR ss.2510.3-101 or
otherwise under ERISA) of such an employee benefit plan or plan.

      Planned Balance:   Not applicable.

      Planned Principal Classes:   As specified in the Preliminary Statement.

      Prepayment Charge:   A Hard Prepayment Charge or Soft Prepayment Charge,
as the context may require.

      Prepayment Charge Period:   As to any Mortgage Loan, the period of time
during which a Prepayment Charge may be imposed.

      Prepayment Interest Excess: As to any Principal Prepayment received by
the Servicer on a Mortgage Loan from the first day through the fifteenth day
of any calendar month other than the month of the Cut-off Date, all amounts
paid by the related Mortgagor in respect of interest on such Principal
Prepayment. All Prepayment Interest Excess shall be retained by the Servicer
as additional servicing compensation.

      Prepayment Interest Shortfall: As to any Distribution Date, Mortgage
Loan and Principal Prepayment received on or after the sixteenth day of the
month preceding the month of such Distribution Date (or, in the case of the
first Distribution Date, on or after the Cut-off Date) and on or before the
last day of the month preceding the month of such Distribution Date, the
amount, if any, by which one month's interest at the related Mortgage Rate,
net of the Servicing Fee Rate, on such Principal Prepayment exceeds the amount
of interest paid in connection with such Principal Prepayment.


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<PAGE>

      Prepayment Period: As to any Distribution Date and related Due Date, the
period from and including the 16th day of the month immediately prior to the
month of such Distribution Date (or, in the case of the first Distribution
Date, from the Cut-off Date) and to and including the 15th day of the month of
such Distribution Date.

      Prepayment Shift Percentage:   Not applicable.

      Primary Insurance Policy:   Each policy of primary mortgage guaranty
insurance or any replacement policy therefor with respect to any Mortgage
Loan.

      Principal Amount: As to any Distribution Date and each Loan Group in
Aggregate Loan Group I, the sum of (a) all monthly payments of principal due
on each Mortgage Loan in that Loan Group on the related Due Date, (b) the
principal portion of the Purchase Price of each Mortgage Loan in that Loan
Group that was repurchased by the Seller pursuant to this Agreement as of such
Distribution Date, excluding any Mortgage Loan that was purchased by the
Servicer as provided in Section 3.12, (c) the Substitution Adjustment Amount
in connection with any Deleted Mortgage Loan in that Loan Group received with
respect to such Distribution Date, (d) any Insurance Proceeds or Liquidation
Proceeds allocable to recoveries of principal of Mortgage Loans in that Loan
Group that are not yet Liquidated Mortgage Loans received during the calendar
month preceding the month of such Distribution Date, (e) with respect to each
Mortgage Loan in that Loan Group that became a Liquidated Mortgage Loan during
the calendar month preceding the month of such Distribution Date, the amount
of Liquidation Proceeds allocable to principal received with respect to such
Mortgage Loan, (f) all partial and full Principal Prepayments on the Mortgage
Loans in that Loan Group received during the related Prepayment Period, and
(g) any Subsequent Recoveries with respect to the Mortgage Loans in that Loan
Group received during the calendar month preceding the month of such
Distribution Date.

      Principal Balance Schedules:   Not applicable.

      Principal Distribution Amount:   With respect to the Group II Offered
Certificates and each Distribution Date, an amount equal to the Principal
Remittance Amount for that Distribution Date minus the Overcollateralization
Release Amount for that Distribution Date plus the Extra Principal
Distribution Amount for that Distribution Date,

      Principal Only Certificates:   As specified in the Preliminary Statement.

      Principal Prepayment: Any payment of principal by a Mortgagor on a
Mortgage Loan (including the principal portion of the Purchase Price of any
Mortgage Loan purchased pursuant to Section 3.12) that is received in advance
of its scheduled Due Date and is not accompanied by an amount representing
scheduled interest due on any date in any month after the month of prepayment.
The Servicer shall apply partial Principal Prepayments in accordance with the
related Mortgage Note.

      Principal Prepayment in Full: Any Principal Prepayment made by a
Mortgagor of the entire principal balance of a Mortgage Loan.

      Principal Relocation Payment: A payment from any Loan Group to REMIC 1A
Interests other than those of their corresponding Loan Group as provided in
the Preliminary Statement. Principal Relocation Payments shall be made of
principal allocations comprising the Principal Amount from a Loan Group.


                                      32

<PAGE>


      Principal Remittance Amount: With respect to Loan Group 4 and any
Distribution Date is equal to:

            (a) the sum, without duplication, of:

                  (1) all principal collected or advanced on the Group 4
            Mortgage Loans with respect to the related Due Date,

                  (2) Principal Prepayments on the Group 4 Mortgage Loans
            collected during the related Prepayment Period,

                  (3) the Stated Principal Balance of each Group 4 Mortgage
            Loan that was repurchased by the Seller or purchased by the
            Servicer with respect to that Distribution Date,

                  (4) any Substitution Adjustment Amounts on the Group 4
            Mortgage Loans, and

                  (5) all Liquidation Proceeds (to the extent such Liquidation
            Proceeds related to principal) and all Subsequent Recoveries
            received on the Group 4 Mortgage Loans during the related
             Prepayment Period

            minus

            (b) all non-recoverable Advances relating to principal on the
      Group 4 Mortgage Loans and certain expenses attributable to Loan Group 4
      reimbursed since the prior Due Date.

      Private Certificates:   As specified in the Preliminary Statement.

      Pro Rata Share: As to any Distribution Date and any Class of Group I
Subordinated Certificates, the portion of the Subordinated Principal
Distribution Amount allocable to such Class, equal to the product of the
Subordinated Principal Distribution Amount on such Distribution Date and a
fraction, the numerator of which is the related Class Certificate Balance
thereof and the denominator of which is the aggregate Class Certificate
Balance of the Group I Subordinated Certificates, in each case immediately
prior to such Distribution Date.

      Proprietary Lease: For any Cooperative Unit, a lease or occupancy
agreement between a Cooperative Corporation and a holder of related Co-op
Shares.

       Prospectus Supplement: The Prospectus Supplement dated March 29, 2007
and any supplement thereto.

      PUD:   Planned Unit Development.

      Purchase Price:   For any Mortgage Loan required to be purchased by the
Seller pursuant to Section 2.02 or 2.03 or purchased by the Servicer pursuant
to Section 3.12, the sum of

      (i) 100% of the unpaid principal balance of the Mortgage Loan on the
date of the purchase,

      (ii) accrued and unpaid interest on the Mortgage Loan at the applicable
Mortgage Rate (or at the applicable Adjusted Mortgage Rate if (x) the
purchaser is the Servicer or (y) if the purchaser is the Seller and the Seller
is the Servicer) from the date through which interest was last paid by the
Mortgagor



                                       33

<PAGE>

to the Due Date in the month in which the Purchase Price is to be
distributed to Certificateholders, net of any unreimbursed Advances made by
the Servicer on the Mortgage Loan, and

      (iii) any costs and damages incurred by the Trust Fund in connection
with any violation by the Mortgage Loan of any predatory or abusive lending
law.

      If the Mortgage Loan is purchased pursuant to Section 3.12, the interest
component of the Purchase Price shall be computed (i) on the basis of the
applicable Adjusted Mortgage Rate before giving effect to the related
modification and (ii) from the date to which interest was last paid to the
date on which the Mortgage Loan is assigned to the Servicer pursuant to
Section 3.12.

      Qualified Insurer: A mortgage guaranty insurance company duly qualified
as such under the laws of the state of its principal place of business and
each state having jurisdiction over the insurer in connection with the
insurance policy issued by the insurer, duly authorized and licensed in such
states to transact a mortgage guaranty insurance business in such states and
to write the insurance provided by the insurance policy issued by it, approved
as a FNMA- or FHLMC-approved mortgage insurer or having a claims paying
ability rating of at least "AA" or equivalent rating by a nationally
recognized statistical rating organization. Any replacement insurer with
respect to a Mortgage Loan must have at least as high a claims paying ability
rating as the insurer it replaces had on the Closing Date.

      Rating Agency: Each of the Rating Agencies specified in the Preliminary
Statement. If any of them or a successor is no longer in existence, "Rating
Agency" shall be the nationally recognized statistical rating organization, or
other comparable Person, designated by the Depositor and identified as a
"Rating Agency" in the Underwriters' Exemption, notice of which designation
shall be given to the Trustee. References to a given rating or rating category
of a Rating Agency means the rating category without giving effect to any
modifiers.

      Realized Loss: With respect to each Liquidated Mortgage Loan, an amount
(not less than zero or more than the Stated Principal Balance of the Mortgage
Loan) as of the date of such liquidation, equal to (i) the Stated Principal
Balance of the Liquidated Mortgage Loan as of the date of such liquidation,
plus (ii) interest at the Adjusted Net Mortgage Rate from the Due Date as to
which interest was last paid or advanced (and not reimbursed) to
Certificateholders up to the Due Date in the month in which Liquidation
Proceeds are required to be distributed on the Stated Principal Balance of
such Liquidated Mortgage Loan from time to time, minus (iii) the Liquidation
Proceeds, if any, received during the month in which such liquidation
occurred, to the extent applied as recoveries of interest at the Adjusted Net
Mortgage Rate and to principal of the Liquidated Mortgage Loan. With respect
to each Mortgage Loan that has become the subject of a Deficient Valuation, if
the principal amount due under the related Mortgage Note has been reduced, the
difference between the principal balance of the Mortgage Loan outstanding
immediately prior to such Deficient Valuation and the principal balance of the
Mortgage Loan as reduced by the Deficient Valuation. With respect to each
Mortgage Loan which has become the subject of a Debt Service Reduction and any
Distribution Date, the amount, if any, by which the principal portion of the
related Scheduled Payment has been reduced.

      To the extent the Servicer receives Subsequent Recoveries with respect
to any Mortgage Loan, the amount of the Realized Loss with respect to that
Mortgage Loan will be reduced by such Subsequent Recoveries.

      Recognition Agreement: For any Cooperative Loan, an agreement between
the Cooperative Corporation and the originator of the Mortgage Loan that
establishes the rights of the originator in the Cooperative Property.


                                      34

<PAGE>


      Record Date: With respect to any Distribution Date and any Definitive
Certificate and the Delay Certificates, the close of business on the last
Business Day of the month preceding the month of that Distribution Date. With
respect to any Distribution Date and the Group II Offered Certificates as long
as they are Book-Entry Certificates, the Business Day immediately prior to
such Distribution Date.

      Reference Bank:   As defined in Section 4.08.

      Refinance Loan:   Any Mortgage Loan the proceeds of which are used to
refinance an Original Mortgage Loan.

      Regular Certificates:   As specified in the Preliminary Statement.

      Regulation AB: Subpart 229.1100 - Asset Backed Securities (Regulation
AB), 17 C.F.R. ss.ss.229.1100-229.1123, as such may be amended from time to
time, and subject to such clarification and interpretation as have been
provided by the Commission in the adopting release (Asset-Backed Securities,
Securities Act Release No. 33-8518, 70 Fed. Reg. 1,506, 1,531 (Jan. 7, 2005))
or by the staff of the Commission, or as may be provided by the Commission or
its staff from time to time.

      Relief Act:   The Servicemembers Civil Relief Act.

      Relief Act Reductions: With respect to any Distribution Date and any
Mortgage Loan as to which there has been a reduction in the amount of interest
collectible thereon for the most recently ended calendar month as a result of
the application of the Relief Act or any similar state or local law, the
amount, if any, by which (i) interest collectible on such Mortgage Loan for
the most recently ended calendar month is less than (ii) interest accrued
thereon for such month pursuant to the Mortgage Note.

      REMIC: A "real estate mortgage investment conduit" within the meaning of
section 860D of the Code.

      REMIC Provisions: Provisions of the federal income tax law relating to
real estate mortgage investment conduits, which appear at sections 860A
through 860G of Subchapter M of Chapter 1 of the Code, and related provisions,
and regulations promulgated thereunder, as the foregoing may be in effect from
time to time as well as provisions of applicable state laws.

      REO Property: A Mortgaged Property acquired by the Trust Fund through
foreclosure or deed-in-lieu of foreclosure in connection with a defaulted
Mortgage Loan.

      Reportable Event: Any event required to be reported on Form 8-K, and in
any event, the following:

      (a) entry into a definitive agreement related to the Trust Fund, the
Certificates or the Mortgage Loans, or an amendment to a Transaction Document,
even if the Depositor is not a party to such agreement (e.g., a servicing
agreement with a servicer contemplated by Item 1108(a)(3) of Regulation AB);

      (b) termination of a Transaction Document (other than by expiration of
the agreement on its stated termination date or as a result of all parties
completing their obligations under such agreement), even if the Depositor is
not a party to such agreement (e.g., a servicing agreement with a servicer
contemplated by Item 1108(a)(3) of Regulation AB);


                                      35

<PAGE>


      (c) with respect to the Servicer only, if the Servicer becomes aware of
any bankruptcy or receivership with respect to the Seller, the Depositor, the
Servicer, the Trustee, any enhancement or support provider contemplated by
Items 1114(b) or 1115 of Regulation AB, or any other material party
contemplated by Item 1101(d)(1) of Regulation AB;

      (d) with respect to the Trustee, the Servicer and the Depositor only,
the occurrence of an early amortization, performance trigger or other event,
including an Event of Default under this Agreement;

      (e) any amendment to this Agreement;

      (f) the resignation, removal, replacement, substitution of the Servicer
or the Trustee;

      (g) with respect to the Servicer only, if the Servicer becomes aware
that (i) any material enhancement or support specified in Item 1114(a)(1)
through (3) of Regulation AB or Item 1115 of Regulation AB that was previously
applicable regarding one or more Classes of the Certificates has terminated
other than by expiration of the contract on its stated termination date or as
a result of all parties completing their obligations under such agreement;
(ii) any material enhancement specified in Item 1114(a)(1) through (3) of
Regulation AB or Item 1115 of Regulation AB has been added with respect to one
or more Classes of the Certificates; or (iii) any existing material
enhancement or support specified in Item 1114(a)(1) through (3) of Regulation
AB or Item 1115 of Regulation AB with respect to one or more Classes of the
Certificates has been materially amended or modified; and

      (h) with respect to the Trustee, the Servicer and the Depositor only, a
required distribution to Holders of the Certificates is not made as of the
required Distribution Date under this Agreement.

      Reporting Subcontractor: With respect to the Servicer or the Trustee,
any Subcontractor determined by such Person pursuant to Section 11.08(b) to be
"participating in the servicing function" within the meaning of Item 1122 of
Regulation AB. References to a Reporting Subcontractor shall refer only to the
Subcontractor of such Person and shall not refer to Subcontractors generally.

      Request for Release: The Request for Release submitted by the Servicer
to the Trustee, substantially in the form of Exhibits M and N, as appropriate.

      Required Insurance Policy: For any Mortgage Loan, any insurance policy
that is required to be maintained from time to time under this Agreement.

      Residual Certificates:   As specified in the Preliminary Statement.

      Responsible Officer: When used with respect to the Trustee, any Managing
Director, any Director, Vice President, any Assistant Vice President, any
Associate, any Assistant Secretary, any Trust Officer, or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above designated officers who at such time shall be officers to whom,
with respect to a particular matter, the matter is referred because of the
officer's knowledge of and familiarity with the particular subject and who has
direct responsibility for the administration of this Agreement.

      Restricted Classes:   As defined in Section 4.02(e).

      Reuters Page LIBOR01: The display page designated as the "LIBOR01" page
on Reuters (or such other page as may replace that page on that service for
the purpose of displaying London inter-bank offered rates or prices of major
banks).


                                      36

<PAGE>


       Rolling Sixty-Day Delinquency Rate: With respect to any Distribution
Date, an amount equal to the average of the Sixty-Day Delinquency Rates for
that Distribution Date and the two immediately preceding Distribution Dates.

      SAIF:   The Savings Association Insurance Fund, or any successor thereto.

      Sarbanes-Oxley Certification:   As defined in Section 11.05.

      S&P:   Standard & Poor's, a division of The McGraw-Hill Companies, Inc.
If S&P is designated as a Rating Agency in the Preliminary Statement, for
purposes of Section 10.05(b) the address for notices to S&P shall be Standard
& Poor's, a division of The McGraw-Hill Companies, Inc., 55 Water Street, New
York, New York 10041, Attention:   Mortgage Surveillance Monitoring, or any
other address that S&P furnishes to the Depositor and the Servicer.

      Scheduled Balance:   Not applicable.

      Scheduled Classes:   As specified in the Preliminary Statement.

      Scheduled Payment: The scheduled monthly payment on a Mortgage Loan due
on any Due Date allocable to principal and/or interest on such Mortgage Loan
which, unless otherwise specified herein, shall give effect to any related
Debt Service Reduction and any Deficient Valuation that affects the amount of
the monthly payment due on such Mortgage Loan.

      Securities Act:   The Securities Act of 1933, as amended.

      Security Agreement: For any Cooperative Loan, the agreement between the
owner of the related Co-op Shares and the originator of the related Mortgage
Note that defines the security interest in the Co-op Shares and the related
Proprietary Lease.

      Seller:   IndyMac Bank, F.S.B., a federal savings bank, and its
successors and assigns, in its capacity as seller of the Mortgage Loans to
the Depositor.

      Senior Certificate Group:   The Group 1 Senior Certificates, Group 2
Senior Certificates or Group 3 Senior Certificates as the context requires.

      Senior Enhancement Percentage:   With respect to the Group II Offered
Certificates and a Distribution Date on or after the Stepdown Date a fraction
(expressed as a percentage):

            (1) the numerator of which is sum of the aggregate Class
      Certificate Balance of the Group II Subordinated Certificates and the
      Overcollateralized Amount (which, for purposes of this definition only,
      shall not be less than zero) and

            (2) the denominator of which is the Group 4 Pool Principal Balance
      as of the Due Date in the prior month (after giving effect to Principal
      Prepayments in the Prepayment Period related to that prior Due Date).

      Senior Credit Support Depletion Date: The date on which the Class
Certificate Balance of each Class of Group I Subordinated Certificates has
been reduced to zero.

      Senior Percentage: For any Senior Certificate Group and Distribution
Date, the percentage equivalent of a fraction the numerator of which is the
aggregate Class Certificate Balance of the Group I



                                      37
<PAGE>



Senior Certificates of such Senior Certificate Group immediately before the
Distribution Date and the denominator of which is the aggregate Stated
Principal Balance of the Group I Mortgage Loans in the related Loan Group as
of the Due Date occurring in the month prior to the month of that Distribution
Date (after giving effect to Principal Prepayments received on the related
Mortgage Loans in the Prepayment Period related to such prior Due Date);
provided, however, that on any Distribution Date after the second Senior
Termination Date, the Senior Percentage for the Group I Senior Certificates of
the remaining Senior Certificate Group is the percentage equivalent of a
fraction, the numerator of which is the aggregate Class Certificate Balance of
the Group I Senior Certificates of such remaining Senior Certificate Group
immediately prior to such Distribution Date and the denominator is the
aggregate Class Certificate Balance of all Classes of Group I Certificates
immediately prior to that Distribution Date.

      Senior Prepayment Percentage: As to any Senior Certificate Group and any
Distribution Date during the seven years beginning on the first Distribution
Date, 100%. The related Senior Prepayment Percentage for any Distribution Date
occurring on or after the seventh anniversary of the first Distribution Date
will, except as provided in this Agreement, be as follows: for any
Distribution Date in the first year thereafter, the related Senior Percentage
plus 70% of the related Subordinated Percentage for such Distribution Date;
for any Distribution Date in the second year thereafter, the related Senior
Percentage plus 60% of the related Subordinated Percentage for such
Distribution Date; for any Distribution Date in the third year thereafter, the
related Senior Percentage plus 40% of the related Subordinated Percentage for
such Distribution Date; for any Distribution Date in the fourth year
thereafter, the related Senior Percentage plus 20% of the related Subordinated
Percentage for such Distribution Date; and for any Distribution Date
thereafter, the related Senior Percentage for such Distribution Date (unless
on any Distribution Date the Senior Percentage of a Senior Certificate Group
exceeds the initial Senior Percentage for such Senior Certificate Group in
which case the Senior Prepayment Percentage for each Senior Certificate Group
for such Distribution Date will once again equal 100%). Notwithstanding the
foregoing, no decrease in any Senior Prepayment Percentage will occur unless
both Senior Step Down Conditions are satisfied with respect to all of the
Mortgage Loans in Aggregate Loan Group I.

      Notwithstanding the preceding paragraph, if (x) on or before the
Distribution Date in March 2010, the Aggregate Group I Subordinated Percentage
is at least 200% of the Aggregate Group I Subordinated Percentage as of the
Closing Date, the delinquency test set forth in the definition of Senior Step
Down Conditions is satisfied with respect to the Group I Mortgage Loans and
cumulative Realized Losses on the Group I Mortgage Loans do not exceed 20% of
the aggregate Class Certificate Balance of the Group I Subordinated
Certificates as of the Closing Date, the Senior Prepayment Percentage for each
Senior Certificate Group will equal the related Senior Percentage for that
Distribution Date plus 50% of an amount equal to 100% minus the related Senior
Percentage for that Distribution Date and (y) after the Distribution Date in
March 2010, the Aggregate Group I Subordinated Percentage is at least 200% of
the Aggregate Group I Subordinated Percentage as of the Closing Date, the
delinquency test set forth in the definition of Senior Step Down Conditions is
satisfied with respect to the Group I Mortgage Loans and cumulative Realized
Losses on the Group I Mortgage Loans do not exceed 30% of the aggregate Class
Certificate Balance of the Group I Subordinated Certificates as of the Closing
Date, the Senior Prepayment Percentage for each Senior Certificate Group will
equal the related Senior Percentage.

      Senior Principal Distribution Amount: As to any Distribution Date and
any Loan Group in Aggregate Loan Group I, the sum of (i) the related Senior
Percentage of all amounts described in clauses (a) through (d) of the
definition of Principal Amount for that Loan Group and such Distribution Date,
(ii) with respect to any Group I Mortgage Loan that became a Liquidated
Mortgage Loan during the calendar month preceding the month of such
Distribution Date, the lesser of (x) the related Senior Percentage of the
Stated Principal Balance of such Mortgage Loan and (y) either (A) if no Excess
Losses were sustained on the Liquidated Mortgage Loan during the preceding
calendar month, the related Senior Prepayment Percentage of the amount of the
Liquidation Proceeds allocable to principal received on the


                                       38

<PAGE>


Mortgage Loan or (B) if an Excess Loss was sustained with respect to such
Liquidated Mortgage Loan during such preceding calendar month, the Senior
Percentage of the amount of the Liquidation Proceeds allocable to principal
received with respect to such Mortgage Loan, and (iii) the sum of (x) the
Senior Prepayment Percentage of the amounts described in clause (f) of the
definition of Principal Amount for that Loan Group and such Distribution Date,
and (y) the applicable Senior Prepayment Percentage of any Subsequent
Recoveries described in clause (g) of the definition of Principal Amount for
that Loan Group and such Distribution Date; provided, however, that if a
Bankruptcy Loss that is an Excess Loss is sustained with respect to a Mortgage
Loan in that Loan Group that is not a Liquidated Mortgage Loan, the Senior
Principal Distribution Amount will be reduced on the related Distribution Date
by the Senior Percentage of the applicable principal portion of such
Bankruptcy Loss; provided further, however, on any Distribution Date after the
second Senior Termination Date, the Senior Principal Distribution Amount for
the remaining Senior Certificate Group in Aggregate Loan Group I will be
calculated pursuant to the above formula based on all the Mortgage Loans in
Aggregate Loan Group I, as opposed to the Mortgage Loans in the related Loan
Group.

      Senior Step Down Conditions: As to any Distribution Date: (i) the
aggregate Stated Principal Balance of all the Group I Mortgage Loans 60 days
or more Delinquent (averaged over the preceding six month period) (including
any Group I Mortgage Loans subject to foreclosure proceedings, REO Property
(regardless of whether that Mortgage Loan is 60 days or more Delinquent) and
Mortgage Loans the Mortgagors of which are in bankruptcy), as a percentage (a)
if such date is on or prior to second Senior Termination Date, the
Subordinated Percentage for that Loan Group of the aggregate Stated Principal
Balance of the Mortgage Loans in that Loan Group, or (b) if such date is after
the second Senior Termination Date, the aggregate Class Certificate Balance of
the Group I Subordinated Certificates immediately prior to such Distribution
Date, does not equal or exceed 50%, and (ii) cumulative Realized Losses on the
Group I Mortgage Loans do not exceed: (a) commencing with the Distribution
Date on the seventh anniversary of the first Distribution Date, 30% of the
Original Subordinated Principal Balance, (b) commencing with the Distribution
Date on the eighth anniversary of the first Distribution Date, 35% of the
Original Subordinated Principal Balance, (c) commencing with the Distribution
Date on the ninth anniversary of the first Distribution Date, 40% of the
Original Subordinated Principal Balance, (d) commencing with the Distribution
Date on the tenth anniversary of the first Distribution Date, 45% of the
Original Subordinated Principal Balance, and (e) commencing with the
Distribution Date on the eleventh anniversary of the first Distribution Date
and thereafter, 50% of the Original Subordinated Principal Balance.

      Senior Target Amount: For any Distribution Date, (x) after the Stepdown
Date and if a Trigger Event is not in effect, an amount equal to the lesser of
(a) the product of (1) 85.80% and (2) the Group 4 Pool Principal Balance as of
the Due Date in the month of that Distribution Date (after giving effect to
Principal Prepayments received on the Group 4 Mortgage Loans in the related
Prepayment Period) and (b) the amount, if any, by which (1) the Group 4 Pool
Principal Balance as of the Due Date in the month of that Distribution Date
(after giving effect to Principal Prepayments received on the Group 4 Mortgage
Loans in the related Prepayment Period) exceeds (2) the OC Floor, and (y) for
any Distribution Date after the Stepdown Date on which a Trigger Event is in
effect, the Senior Target Amount for the immediately preceding Distribution
Date.

      Senior Termination Date: For each Senior Certificate Group included in
the Group I Certificates, the Distribution Date on which the aggregate Class
Certificate Balance of the related Classes of Group I Senior Certificates has
been reduced to zero.

      Servicer:   IndyMac Bank, F.S.B., a federal savings bank, and its
successors and assigns, in its capacity as servicer under this Agreement.



                                      39

<PAGE>


      Servicer Advance Date:   As to any Distribution Date, 12:30 P.M.
Pacific time on the Business Day preceding the Distribution Date.

      Servicing Advances:   All customary, reasonable, and necessary "out of
pocket" costs and expenses incurred in the performance by the Servicer of its
servicing obligations, including the cost of

            (a) the preservation, restoration, and protection of a Mortgaged
      Property,

             (b) expenses reimbursable to the Servicer pursuant to Section 3.12
      and any enforcement or judicial proceedings, including foreclosures,

            (c) the maintenance and liquidation of any REO Property,

            (d) compliance with the obligations under Section 3.10, and

            (e) reasonable compensation to the Servicer or its affiliates for
      acting as broker in connection with the sale of foreclosed Mortgaged
      Properties and for performing certain default management and other
      similar services (including appraisal services) in connection with the
      servicing of defaulted Mortgage Loans. For purposes of this clause (e),
      only costs and expenses incurred in connection with the performance of
      activities generally considered to be outside the scope of customary
      servicing or master servicing duties shall be treated as Servicing
      Advances.

      Servicing Criteria:   The "servicing criteria" set forth in Item 1122(d)
of Regulation AB.

      Servicing Fee: As to each Mortgage Loan and any Distribution Date, one
month's interest at the applicable Servicing Fee Rate on the Stated Principal
Balance of the Mortgage Loan, or, whenever a payment of interest accompanies a
Principal Prepayment in Full made by the Mortgagor, interest at the Servicing
Fee Rate on the Stated Principal Balance of the Mortgage Loan for the period
covered by the payment of interest, subject to reduction as provided in
Section 3.15.

      Servicing Fee Rate: For each Mortgage Loan in Aggregate Loan Group I,
0.375% per annum. For each Group 4 Mortgage Loan, 0.250% per annum.

      Servicing Officer: Any officer of the Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans whose
name and facsimile signature appear on a list of servicing officers furnished
to the Trustee by the Servicer on the Closing Date pursuant to this Agreement,
as the list may from time to time be amended.

      Servicing Standard: That degree of skill and care exercised by the
Servicer with respect to mortgage loans comparable to the Mortgage Loans
serviced by the Servicer for itself or others.

      Shift Percentage:   Not applicable.

      Six-Month LIBOR Index: The average of the London interbank offered rates
for six month U.S. dollar deposits in the London market, generally as set
forth in either The Wall Street Journal or some other source generally
accepted in the residential mortgage loan origination business and specified
in the related Mortgage Note or, if such rate ceases to be published in The
Wall Street Journal or becomes unavailable for any reason, then based upon a
new index selected by the Servicer, based on comparable information, in each
case, as most recently announced as of either 45 days prior to, or the first
Business Day of the month immediately preceding the month of, such Adjustment
Date.



                                      40

<PAGE>


      Sixty-Day Delinquency Rate: With respect to any Distribution Date on or
after the Stepdown Date, a fraction, expressed as a percentage, the numerator
of which is the aggregate Stated Principal Balance of all Group 4 Mortgage
Loans 60 or more days delinquent as of the close of business on the last day
of the calendar month preceding such Distribution Date (including Group 4
Mortgage Loans in foreclosure, bankruptcy and REO Properties) and the
denominator of which is the aggregate Stated Principal Balance for such
Distribution Date of the Group 4 Mortgage Loans as of the related Due Date
(after giving effect to Principal Prepayments, the principal portion of any
Liquidation Proceeds and any Subsequent Recoveries received in the related
Prepayment Period).

      Soft Prepayment Charge: As to a Mortgage Loan, any charge payable by a
Mortgagor in connection with certain partial prepayments and all prepayments
in full made within the related Prepayment Charge Period other than as a
result of selling the Mortgaged Property, the Soft Prepayment Charges with
respect to each applicable Mortgage Loan so held by the Trust Fund being
identified in the Mortgage Loan Schedule.

      Special Hazard Coverage Termination Date: With respect to the Group I
Mortgage Loans, the point in time at which the Special Hazard Loss Coverage
Amount is reduced to zero.

      Special Hazard Loss: With respect to the Group I Mortgage Loans any
Realized Loss suffered by a Mortgaged Property on account of direct physical
loss, but not including (i) any loss of a type covered by a hazard insurance
policy or a flood insurance policy required to be maintained with respect to
such Mortgaged Property pursuant to Section 3.10 to the extent of the amount
of such loss covered thereby, or (ii) any loss caused by or resulting from:

            (a) normal wear and tear;

            (b) fraud, conversion or other dishonest act on the part of the
      Trustee, the Servicer or any of their agents or employees (without
      regard to any portion of the loss not covered by any errors and
      omissions policy);

            (c) errors in design, faulty workmanship or faulty materials,
      unless the collapse of the property or a part thereof ensues and then
      only for the ensuing loss;

            (d) nuclear or chemical reaction or nuclear radiation or
      radioactive or chemical contamination, all whether controlled or
      uncontrolled, and whether such loss be direct or indirect, proximate or
      remote or be in whole or in part caused by, contributed to or aggravated
      by a peril covered by the definition of the term "Special Hazard Loss";

            (e) hostile or warlike action in time of peace and war, including
      action in hindering, combating or defending against an actual, impending
      or expected attack:

                  1. by any government or sovereign power, de jure or de
            facto, or by any authority maintaining or using military, naval or
            air forces; or

                  2. by military, naval or air forces; or

                  3. by an agent of any such government, power, authority or
             forces;

            (f) any weapon of war employing nuclear fission, fusion or other
      radioactive force, whether in time of peace or war; or


                                      41

<PAGE>


            (g) insurrection, rebellion, revolution, civil war, usurped power
      or action taken by governmental authority in hindering, combating or
      defending against such an occurrence, seizure or destruction under
      quarantine or customs regulations, confiscation by order of any
       government or public authority, or risks of contraband or illegal
      transportation or trade.

      Special Hazard Loss Coverage Amount: With respect to the Group I
Mortgage Loans and the first Distribution Date, $8,501,564. With respect to
any Distribution Date after the first Distribution Date, the lesser of (a) the
greatest of (i) 1% of the aggregate of the principal balances of the Group I
Mortgage Loans, (ii) twice the principal balance of the largest Group I
Mortgage Loan and (iii) the aggregate of the principal balances of all Group I
Mortgage Loans secured by Mortgaged Properties located in the single
California postal zip code area having the highest aggregate principal balance
of any such zip code area and (b) the Special Hazard Loss Coverage Amount as
of the Closing Date less the amount, if any, of Special Hazard Losses
allocated to the Certificates since the Closing Date. All principal balances
for the purpose of this definition will be calculated as of the first day of
the calendar month preceding the month of such Distribution Date after giving
effect to Scheduled Payments on the Mortgage Loans then due, whether or not
paid.

      Special Hazard Mortgage Loan: With respect to the Group I Mortgage
Loans, a Liquidated Mortgage Loan as to which a Special Hazard Loss has
occurred.

      Startup Day:   The Closing Date.

      Stated Principal Balance: As to any Mortgage Loan and Due Date, the
unpaid principal balance of such Mortgage Loan as of such Due Date, as
specified in the amortization schedule at the time relating thereto (before
any adjustment to such amortization schedule by reason of any moratorium or
similar waiver or grace period) after giving effect to the sum of: (i) the
payment of principal due on such Due Date and irrespective of any delinquency
in payment by the related Mortgagor and (ii) any Liquidation Proceeds
allocable to principal received in the prior calendar month and any Principal
Prepayments received through the last day of the related Prepayment Period, in
each case, with respect to such Mortgage Loan.

      Stepdown Date: The earlier to occur of (1) the Distribution Date after
the Distribution Date on which the aggregate Class Certificate Balance of the
Group II Senior Certificates is reduced to zero and (2) the later to occur of
(x) the Distribution Date in April 2010 and (y) the first Distribution Date on
which the Senior Enhancement Percentage exceeds or equals 14.20%.

      Stepdown Target Subordination Percentage: For any Class of Group II
Subordinated Certificates and any Distribution Date on and after the Stepdown
Date, the respective percentages indicated in the following table:

                                 Stepdown Target
                                  Subordination
                                   Percentage
                                 ----------------
        Class 4-M-1............        8.60%
        Class 4-M-2............        4.80%
        Class 4-M-3............        3.10%
        Class 4-M-4............        2.10%

      Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing (as "servicing" is commonly understood
by participants in the mortgage-backed securities market) of Mortgage Loans
but performs one or more discrete functions identified in Item 1122(d) of



                                      42
<PAGE>



Regulation AB with respect to the Mortgage Loans under the direction or
authority of the Servicer or the Trustee, as the case may be.

      Subordinated Certificate Group: With respect to the Group I
Certificates, the Group I Subordinated Certificates, and with respect to the
Group II Certificates, the Group II Subordinated Certificates, as the context
may require.

      Subordinated Class Principal Distribution Target Amount: For any Class
of Group II Subordinated Certificates and Distribution Date, the excess of:

      (1) the sum of: (a) the aggregate Class Certificate Balance of the Group
II Senior Certificates (after taking into account the distribution of the
Group II Senior Principal Distribution Amount for that Distribution Date), (b)
the aggregate Class Certificate Balance of any Class(es) of Group II
Subordinated Certificates that are senior to the subject Class (in each case,
after taking into account distribution of the Subordinated Class Principal
Distribution Target Amount(s) for such more senior Class(es) of Certificates
for such Distribution Date), and (c) the Class Certificate Balance of the
subject Class of Group II Subordinated Certificates immediately prior to such
Distribution Date over

      (2) the lesser of (a) the product of (x) 100% minus the Stepdown Target
Subordination Percentage for the subject Class of Certificates and (y) the
aggregate Stated Principal Balance of the Group 4 Mortgage Loans for that
Distribution Date and (b) the aggregate Stated Principal Balance of the Group
4 Mortgage Loans for that Distribution Date minus the OC Floor;

provided, however, that if such Class of Group II Subordinated Certificates is
the only Class of Group II Subordinated Certificates outstanding on such
Distribution Date, that Class will be entitled to receive the entire remaining
Principal Distribution Amount until its Class Certificate Balance is reduced
to zero.

      Subordinated Percentage: As to any Loan Group in Aggregate Loan Group I
and any Distribution Date on or prior to the second Senior Termination Date
and any Loan Group, 100% minus the Senior Percentage for the Senior
Certificate Group relating to such Loan Group for such Distribution Date. As
to any Distribution Date after the second Senior Termination Date, 100% minus
the Senior Percentage for such Distribution Date.

      Subordinated Prepayment Percentage: As to any Distribution Date and Loan
Group in Aggregate Loan Group I, 100% minus the related Senior Prepayment
Percentage for such Distribution Date.

      Subordinated Principal Distribution Amount: As to any Distribution Date
and Loan Group in Aggregate Loan Group I, the sum of the following with
respect to such Loan Group: (i) the Subordinated Percentage of all amounts
described in clauses (a) through (d) of the definition of Principal Amount
with respect to such Loan Group and such Distribution Date, (ii) with respect
to any Mortgage Loan in the related Loan Group that became a Liquidated
Mortgage Loan during the calendar month preceding the month of such
Distribution Date, the amount of Liquidation Proceeds allocable to principal
received with respect thereto remaining after application thereof pursuant to
clause (ii) of the definition of Senior Principal Distribution Amount for that
Loan Group, up to the related Subordinated Percentage of the Stated Principal
Balance of such Mortgage Loan and (iii) the sum of the Subordinated Prepayment
Percentage of the amounts described in clauses (f) and (g) of the definition
of Principal Amount with respect to that Loan Group for such Distribution
Date; provided, however, that on any Distribution Date after the second Senior
Termination Date, the Subordinated Principal Distribution Amount will not be
calculated by Loan Group but will equal the amount calculated pursuant to the
formula set forth above based on the applicable Subordinated Percentage and
Subordinated Prepayment Percentage for such



                                      43
<PAGE>



Distribution Date with respect to all of the Mortgage Loans in Aggregate Loan
Group I as opposed to the Mortgage Loans only in the related Loan Group.

      Subsequent Recoveries: As to any Distribution Date, with respect to a
Liquidated Mortgage Loan that resulted in a Realized Loss in a prior calendar
month, unexpected amounts received by the Servicer (net of any related
expenses permitted to be reimbursed pursuant to Section 3.09) specifically
related to such Liquidated Mortgage Loan.

      Substitute Mortgage Loan: A Mortgage Loan substituted by the Seller for
a Deleted Mortgage Loan that must, on the date of substitution, as confirmed
in a Request for Release, substantially in the form of Exhibit M,

      (i) have a Stated Principal Balance, after deduction of the principal
portion of the Scheduled Payment due in the month of substitution, not in
excess of, and not more than 10% less than, the Stated Principal Balance of
the Deleted Mortgage Loan (unless the amount of any shortfall is deposited by
the Seller in the Certificate Account and held for distribution to the
Certificateholders on the related Distribution Date);

      (ii) have a Mortgage Rate no lower than and not more than 1% per annum
higher than the Deleted Mortgage Loan;

      (iii) have a Maximum Mortgage Rate not more than 1% per annum higher
than and not lower than the Maximum Mortgage Rate of the Deleted Mortgage
Loan,

      (iv) have the same Mortgage Index and interval between Adjustment Dates
as the Deleted Mortgage Loan and a Gross Margin not more than 1% per annum
higher than, and not lower than that of the Deleted Mortgage Loan,;

      (vi) have a Loan-to-Value Ratio no higher than that of the Deleted
Mortgage Loan;

      (vii) have a remaining term to maturity not more than one year greater
than and not more than one year less than that of the Deleted Mortgage Loan,
provided that the aggregate of any Substitute Mortgage Loan with a remaining
term to maturity greater than that of the Deleted Mortgage Loan may not exceed
5.00% of the aggregate Stated Principal Balance of the Mortgage Loans in the
applicable Aggregate Loan Group as of the Cut-off Date;

      (viii) not be a Cooperative Loan unless the Deleted Mortgage Loan was a
Cooperative Loan; and

      (ix) comply with each representation and warranty in Section 2.03.

      Substitution Adjustment Amount:   As defined in Section 2.03.

      Suspension Notification:   Notification to the Commission of the
suspension of the Trust Fund's obligation to file reports pursuant to
Section 15(d) of the Exchange Act.

      Targeted Balance:   Not applicable.

      Targeted Principal Classes:   As specified in the Preliminary Statement.


                                      44

<PAGE>


      Transaction Documents:   This Agreement and any other document or
agreement entered into in connection with the Trust Fund, the Certificates or
the Mortgage Loans.

      Transfer:   Any direct or indirect transfer or sale of any Ownership
Interest in a Residual Certificate.

      Transfer Payment Made:   As defined in Section 4.04.

      Transfer Payment Received:   As defined in Section 4.04.

      Trigger Event: With respect to a Distribution Date on or after the
Stepdown Date either a Delinquency Trigger Event is in effect with respect to
that Distribution Date or a Cumulative Loss Trigger Event is in effect with
respect to that Distribution Date.

      Trust Fund:   The corpus of the trust created under this Agreement
consisting of

      (i) the Mortgage Loans and all interest and principal received on them
after the Cut-off Date, other than amounts due on the Mortgage Loans by the
Cut-off Date;

      (ii) the Certificate Account, the Distribution Account, the Carryover
Reserve Fund and all amounts deposited therein pursuant to this Agreement
(including amounts received from the Seller on the Closing Date that will be
deposited by the Trustee in the Certificate Account pursuant to Section 2.01);

      (iii) property that secured a Mortgage Loan and has been acquired by
foreclosure, deed-in-lieu of foreclosure, or otherwise;

      (iv) the right to collect any amounts under any mortgage insurance
policies covering any Mortgage Loan and any collections received under any
mortgage insurance policies covering any Mortgage Loan; and

      (v) all proceeds of the conversion, voluntary or involuntary, of any of
the foregoing.

      Trustee: Deutsche Bank National Trust Company and its successors and, if
a successor trustee is appointed under this Agreement, the successor.

      Trustee Fee: The fee payable to the Trustee on each Distribution Date
for its services as Trustee hereunder, in an amount equal to one-twelfth of
the Trustee Fee Rate multiplied by the aggregate Stated Principal Balance of
the Mortgage Loans as of the Due Date in the month preceding the month of such
Distribution Date (after giving effect to Principal Prepayments in the
Prepayment Period related to that prior Due Date).

      Trustee Fee Rate:   0.0015% per annum.

      The terms "United States," "State," and "International Organization"
have the meanings in section 7701 of the Code or successor provisions. A
corporation will not be treated as an instrumentality of the United States or
of any State or political subdivision thereof for these purposes if all of its
activities are subject to tax and, with the exception of the Federal Home Loan
Mortgage Corporation, a majority of its board of directors is not selected by
such government unit.

      UCC:   The Uniform Commercial Code for the State of New York.

      Undercollateralized Group:   As defined in Section 4.04.


                                      45

<PAGE>


      Underwriter's Exemption:   Prohibited Transaction Exemption 2002-41, 67
Fed.   Reg.   54487 (2002) (or any successor thereto), or any substantially
similar administrative exemption granted by the U.S. Department of Labor.

      United States Person or U.S. Person:

      (i) A citizen or resident of the United States;

      (ii) a corporation (or entity treated as a corporation for tax purposes)
created or organized in the United States or under the laws of the United
States or of any state thereof, including, for this purpose, the District of
Columbia;
      (iii) a partnership (or entity treated as a partnership for tax
purposes) organized in the United States or under the laws of the United
States or of any state thereof, including, for this purpose, the District of
Columbia (unless provided otherwise by future Treasury regulations);

      (iv) an estate whose income is includible in gross income for United
States income tax purposes regardless of its source; or

      (v) a trust, if a court within the United States is able to exercise
primary supervision over the administration of the trust and one or more U.S.
Persons have authority to control all substantial decisions of the trust.
Notwithstanding the last clause of the preceding sentence, to the extent
provided in Treasury regulations, certain trusts in existence on August 20,
1996, and treated as U.S. Persons before that date, may elect to continue to
be U.S. Persons.

      Unpaid Realized Loss Amount: For any Class of Group II Certificates, (x)
the portion of the aggregate Applied Realized Loss Amount previously allocated
to that Class remaining unpaid from prior Distribution Dates minus (y) any
increase in the Class Certificate Balance of that Class due to the allocation
of Subsequent Recoveries to the Class Certificate Balance of that Class
together with interest thereon at the applicable Pass-Through Rate.

      U.S.A. Patriot Act: The Uniting and Strengthening America by Providing
Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001.

      Voting Rights: The portion of the voting rights of all of the
Certificates related to an Aggregate Loan Group that is allocated to any such
Certificate. As of any date of determination, (a) 1% of all Voting Rights
related to an Aggregate Loan Group shall be allocated to the Holders of the
Class A-R Certificates and (b) the remaining Voting Rights related to an
Aggregate Loan Group shall be allocated among Holders of the remaining Classes
of Certificates related to that Aggregate Loan Group in proportion to the
Certificate Balances of those Certificates on that date.

      Weighted Average Adjusted Net Mortgage Rate: For any Distribution Date,
the average of the Adjusted Net Mortgage Rate of each Mortgage Loan, weighted
on the basis of its Stated Principal Balance as of the Due Date in the prior
month (after giving effect to Principal Prepayments in the Prepayment Period
related to such prior Due Date).

      Withdrawal Date: The 18th day of each month, or if such day is not a
Business Day, the next preceding Business Day.


                                      46

<PAGE>


      Section 1.02. Rules of Construction.

      Except as otherwise expressly provided in this Agreement or unless the
context clearly requires otherwise

(a) References to designated articles, sections, subsections, exhibits, and
other subdivisions of this Agreement, such as "Section 6.12 (a)," refer to the
designated article, section, subsection, exhibit, or other subdivision of this
Agreement as a whole and to all subdivisions of the designated article,
section, subsection, exhibit, or other subdivision. The words "herein,"
"hereof," "hereto," "hereunder," and other words of similar import refer to
this Agreement as a whole and not to any particular article, section, exhibit,
or other subdivision of this Agreement.

(b) Any term that relates to a document or a statute, rule, or regulation
includes any amendments, modifications, supplements, or any other changes that
may have occurred since the document, statute, rule, or regulation came into
being, including changes that occur after the date of this Agreement.

(c) Any party may execute any of the requirements under this Agreement either
directly or through others, and the right to cause something to be done rather
than doing it directly shall be implicit in every requirement under this
Agreement. Unless a provision is restricted as to time or limited as to
frequency, all provisions under this Agreement are implicitly available and
things may happen from time to time.

(d) The term "including" and all its variations mean "including but not
limited to." Except when used in conjunction with the word "either," the word
"or" is always used inclusively (for example, the phrase "A or B" means "A or
B or both," not "either A or B but not both").

(e) A reference to "a [thing]" or "any [of a thing]" does not imply the
existence or occurrence of the thing referred to even though not followed by
"if any," and "any [of a thing]" is any of it. A reference to the plural of
anything as to which there could be either one or more than one does not imply
the existence of more than one (for instance, the phrase "the obligors on a
note" means "the obligor or obligors on a note"). "Until [something occurs]"
does not imply that it must occur, and will not be modified by the word
"unless." The word "due" and the word "payable" are each used in the sense
that the stated time for payment has passed. The word "accrued" is used in its
accounting sense, i.e., an amount paid is no longer accrued. In the
calculation of amounts of things, differences and sums may generally result in
negative numbers, but when the calculation of the excess of one thing over
another results in zero or a negative number, the calculation is disregarded
and an "excess" does not exist. Portions of things may be expressed as
fractions or percentages interchangeably.

(f) All accounting terms used in an accounting context and not otherwise
defined, and accounting terms partly defined in this Agreement, to the extent
not completely defined, shall be construed in accordance with generally
accepted accounting principles. To the extent that the definitions of
accounting terms in this Agreement are inconsistent with their meanings under
generally accepted accounting principles, the definitions contained in this
Agreement shall control. Capitalized terms used in this Agreement without
definition that are defined in the Uniform Commercial Code are used in this
Agreement as defined in the Uniform Commercial Code.

(g) In the computation of a period of time from a specified date to a later
specified date or an open-ended period, the words "from" and "beginning" mean
"from and including," the word "after" means "from but excluding," the words
"to" and "until" mean "to but excluding," and the word "through" means "to and
including." Likewise, in setting deadlines or other periods, "by" means "by."
The words



                                      47
<PAGE>


"preceding," "following," and words of similar import, mean immediately
preceding or following. References to a month or a year refer to calendar
months and calendar years.

(h) Any reference to the enforceability of any agreement against a party means
that it is enforceable, subject as to enforcement against the party, to
applicable bankruptcy, insolvency, reorganization, and other similar laws of
general applicability relating to or affecting creditors' rights and to
general equity principles.



                                       48

<PAGE>

                                 ARTICLE TWO

         CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES

      Section 2.01. Conveyance of Mortgage Loans.

      (a) The Seller, concurrently with the execution and delivery of this
Agreement, hereby transfers to the Depositor, without recourse, all the
interest of the Seller in each Mortgage Loan, including all interest and
principal received or receivable by the Seller on each Mortgage Loan after the
Cut-off Date and all interest and principal payments on each Mortgage Loan
received before the Cut-off Date for installments of interest and principal
due after the Cut-off Date but not including payments of principal and
interest due by the Cut-off Date. By the Closing Date, the Seller shall
deliver to the Depositor or, at the Depositor's direction, to the Trustee or
other designee of the Depositor, the Mortgage File for each Mortgage Loan
listed in the Mortgage Loan Schedule (except that, in the case of Mortgage
Loans that are Delay Delivery Mortgage Loans, such delivery may take place
within five Business Days of the Closing Date) as of the Closing Date. The
delivery of the Mortgage Files shall be made against payment by the Depositor
of the purchase price, previously agreed to by the Seller and Depositor, for
the Mortgage Loans. With respect to any Mortgage Loan that does not have a
first payment date on or before the Due Date in the month of the first
Distribution Date, the Seller shall deposit into the Distribution Account on
the first Distribution Account Deposit Date an amount equal to one month's
interest at the related Adjusted Mortgage Rate on the Cut-off Date Principal
Balance of such Mortgage Loan. On the Closing Date the Depositor shall also
deposit or shall cause to be deposited $1,000 into the Carryover Reserve Fund
and $400 into the Certificate Account for the benefit of the Class I-P-1,
Class I-P-2, Class 4-P-1 and Class 4-P-2 Certificates.

      (b) The Depositor, concurrently with the execution and delivery of this
Agreement, hereby (i) transfers to the Trustee for the benefit of the
Certificateholders, without recourse, all the interest of the Depositor in the
Trust Fund, together with the Depositor's right to require the Seller to cure
any breach of a representation or warranty made in this Agreement by the
Seller or to repurchase or substitute for any affected Mortgage Loan in
accordance with this Agreement.

      (c) In connection with the transfer and assignment of each Mortgage
Loan, the Depositor has delivered (or, in the case of the Delay Delivery
Mortgage Loans, will deliver to the Trustee within the time periods specified
in the definition of Delay Delivery Mortgage Loans), for the benefit of the
Certificateholders the following documents or instruments with respect to each
Mortgage Loan so assigned:

            (i) The original Mortgage Note, endorsed by manual or facsimile
      signature in blank in the following form: "Pay to the order of
      _______________ ______________without recourse," with all intervening
      endorsements showing a complete chain of endorsement from the originator
      to the Person endorsing the Mortgage Note (each endorsement being
      sufficient to transfer all interest of the party so endorsing, as
      noteholder or assignee thereof, in that Mortgage Note) or a lost note
      affidavit for any Lost Mortgage Note from the Seller stating that the
      original Mortgage Note was lost or destroyed, together with a copy of
      the Mortgage Note.

            (ii) Except as provided below and for each Mortgage Loan that is
      not a MERS Mortgage Loan, the original recorded Mortgage or a copy of
      such Mortgage certified by the Seller as being a true and complete copy
      of the Mortgage (or, in the case of a Mortgage for which the related
      Mortgaged Property is located in the Commonwealth of Puerto Rico, a true
      copy of the Mortgage certified as such by the applicable notary) and in
      the case of each MERS Mortgage Loan, the original Mortgage, noting the
      presence of the MIN of the Mortgage Loans


                                      49

<PAGE>


      and either language indicating that the Mortgage Loan is a MOM Loan if
      the Mortgage Loan is a MOM Loan or if the Mortgage Loan was not a MOM
      Loan at origination, the original Mortgage and the assignment thereof to
      MERS, with evidence of recording indicated thereon, or a copy of the
      Mortgage certified by the public recording office in which such Mortgage
      has been recorded.

            (iii) In the case of a Mortgage Loan that is not a MERS Mortgage
      Loan, a duly executed assignment of the Mortgage (which may be included
      in a blanket assignment or assignments), together with, except as
      provided below, all interim recorded assignments of the mortgage (each
      assignment, when duly and validly completed, to be in recordable form
      and sufficient to effect the assignment of and transfer to its assignee
      of the Mortgage to which the assignment relates). If the related
      Mortgage has not been returned from the applicable public recording
      office, the assignment of the Mortgage may exclude the information to be
      provided by the recording office. The assignment of Mortgage need not be
      delivered in the case of a Mortgage for which the related Mortgage
      Property is located in the Commonwealth of Puerto Rico.

            (iv) The original or copies of each assumption, modification,
      written assurance, or substitution agreement.

            (v) Except as provided below, the original or duplicate original
      lender's title policy and all its riders.

            (vi) The originals of the following documents for each Cooperative
      Loan:

                   (A) the Co-op Shares, together with a stock power in blank;

                  (B) the executed Security Agreement;

                  (C) the executed Proprietary Lease;

                  (D) the executed Recognition Agreement;

                   (E) the executed UCC-1 financing statement that has been
            filed in all places required to perfect the Seller's interest in
            the Co-op Shares and the Proprietary Lease with evidence of
            recording on it; and

                   (F) executed UCC-3 financing statements or other appropriate
            UCC financing statements required by state law, evidencing a
            complete and unbroken line from the mortgagee to the Trustee with
            evidence of recording thereon (or in a form suitable for
            recordation).

      In addition, in connection with the assignment of any MERS Mortgage
Loan, the Seller agrees that it will cause, at the Seller's expense, the
MERS(R) System to indicate that the Mortgage Loans sold by the Seller to the
Depositor have been assigned by the Seller to the Trustee in accordance with
this Agreement for the benefit of the Certificateholders by including (or
deleting, in the case of Mortgage Loans that are repurchased in accordance
with this Agreement) in such computer files the information required by the
MERS(R) System to identify the series of the Certificates issued in connection
with such Mortgage Loans. The Seller further agrees that it will not, and will
not permit the Servicer to, and the Servicer agrees that it will not, alter
the information referenced in this paragraph with respect to any Mortgage Loan
sold by the Seller to the Depositor during the term of this Agreement unless
and until such Mortgage Loan is repurchased in accordance with the terms of
this Agreement.



                                      50

<PAGE>


      In the event that in connection with any Mortgage Loan that is not a
MERS Mortgage Loan the Depositor cannot deliver (a) the original recorded
Mortgage, (b) all interim recorded assignments or (c) the lender's title
policy (together with all riders thereto) satisfying the requirements of
clause (ii), (iii) or (v) above, respectively, concurrently with the execution
and delivery of this Agreement because such document or documents have not
been returned from the applicable public recording office in the case of
clause (ii) or (iii) above, or because the title policy has not been delivered
to either the Servicer or the Depositor by the applicable title insurer in the
case of clause (v) above, then the Depositor shall promptly deliver to the
Trustee, in the case of clause (ii) or (iii) above, the original Mortgage or
the interim assignment, as the case may be, with evidence of recording
indicated on when it is received from the public recording office, or a copy
of it, certified, if appropriate, by the relevant recording office and in the
case of clause (v) above, the original or a copy of a written commitment or
interim binder or preliminary report of title issued by the title insurance or
escrow company, with the original or duplicate copy thereof to be delivered to
the Trustee upon receipt thereof. The delivery of the original Mortgage Loan
and each interim assignment or a copy of them, certified, if appropriate, by
the relevant recording office, shall not be made later than one year following
the Closing Date, or, in the case of clause (v) above, later than 120 days
following the Closing Date. If the Depositor is unable to deliver each
Mortgage by that date and each interim assignment because any documents have
not been returned by the appropriate recording office, or, in the case of each
interim assignment, because the related Mortgage has not been returned by the
appropriate recording office, the Depositor shall deliver the documents to the
Trustee as promptly as possible upon their receipt and, in any event, within
720 days following the Closing Date.

      The Depositor shall forward to the Trustee (a) from time to time
additional original documents evidencing an assumption or modification of a
Mortgage Loan and (b) any other documents required to be delivered by the
Depositor or the Servicer to the Trustee. If the original Mortgage is not
delivered and in connection with the payment in full of the related Mortgage
Loan the public recording office requires the presentation of a "lost
instruments affidavit and indemnity" or any equivalent document, because only
a copy of the Mortgage can be delivered with the instrument of satisfaction or
reconveyance, the Servicer shall execute and deliver the required document to
the public recording office. If a public recording office retains the original
recorded Mortgage or if a Mortgage is lost after recordation in a public
recording office, the Seller shall deliver to the Trustee a copy of the
Mortgage certified by the public recording office to be a true and complete
copy of the original recorded Mortgage.

      As promptly as practicable after any transfer of a Mortgage Loan under
this Agreement, and in any event within thirty days after the transfer, the
Trustee shall (i) affix the Trustee's name to each assignment of Mortgage, as
its assignee, and (ii) cause to be delivered for recording in the appropriate
public office for real property records the assignments of the Mortgages to
the Trustee, except that, if the Trustee has not received the information
required to deliver any assignment of a Mortgage for recording, the Trustee
shall deliver it as soon as practicable after receipt of the needed
information and in any event within thirty days.

      If any Mortgage Loans have been prepaid in full as of the Closing Date,
the Depositor, in lieu of delivering the above documents to the Trustee, will
deposit in the Certificate Account the portion of the prepayment that is
required to be deposited in the Certificate Account pursuant to Section 3.06.

      Notwithstanding anything to the contrary in this Agreement, within five
Business Days after the Closing Date, the Seller shall either

            (x) deliver to the Trustee the Mortgage File as required pursuant
            to this Section 2.01 for each Delay Delivery Mortgage Loan or


                                      51

<PAGE>


            (y) (A) repurchase the Delay Delivery Mortgage Loan or (B)
            substitute the Substitute Mortgage Loan for a Delay Delivery
            Mortgage Loan, which repurchase or substitution shall be
            accomplished in the manner and subject to the conditions in
            Section 2.03 (treating each such Delay Delivery Mortgage Loan as a
            Deleted Mortgage Loan for purposes of such Section 2.03);

provided, however, that if the Seller fails to deliver a Mortgage File for any
Delay Delivery Mortgage Loan within the period specified herein, the Seller
shall use its best reasonable efforts to effect a substitution, rather than a
repurchase of, such Deleted Mortgage Loan and provided further that the cure
period provided for in Section 2.02 or in Section 2.03 shall not apply to the
initial delivery of the Mortgage File for such Delay Delivery Mortgage Loan,
but rather the Seller shall have five (5) Business Days to cure such failure
to deliver. At the end of such period, the Trustee shall send a Delay Delivery
Certification for the Delay Delivery Mortgage Loans delivered during such
period in accordance with the provisions of Section 2.02.

      (d) Notwithstanding the foregoing, however, for administrative
convenience and facilitation of servicing and to reduce closing costs, the
assignments of Mortgage shall not be required to be submitted for recording
(except with respect to any Mortgage Loan located in Maryland) unless such
failure to record would, as certified to the Trustee in writing by the
Servicer, result in a withdrawal or a downgrading by any Rating Agency of the
rating on any Class of Certificates; provided, however, that each assignment
of Mortgage shall be submitted for recording by the Seller (at the direction
of the Servicer) in the manner described above, at no expense to the Trust
Fund or the Trustee, upon the earliest to occur of: (i) reasonable direction
by the Holders of Certificates entitled to at least 25% of the Voting Rights,
(ii) the occurrence of a bankruptcy, insolvency or foreclosure relating to the
Seller, (iii) the occurrence of a servicing transfer as described in Section
7.02 and (iv) if the Seller is not the Servicer and with respect to any one
assignment or Mortgage, the occurrence of a bankruptcy, insolvency or
foreclosure relating to the Mortgagor under the related Mortgage.
Notwithstanding the foregoing, if the Servicer is unable to pay the cost of
recording the assignments of Mortgage, such expense shall be paid by the
Trustee and shall be reimbursable out of the Distribution Account.

      (e) The Seller agrees to treat the transfer of the Mortgage Loans to the
Depositor as a sale for all tax, accounting, and regulatory purposes.

      (f) The Trust Fund does not intend to acquire or hold any Mortgage Loan
that would violate the representations made by the Seller set forth in clause
(39) of Schedule III.

      Section 2.02. Acceptance by the Trustee of the Mortgage Loans.

      The Trustee acknowledges receipt of the documents identified in the
Initial Certification in the form of Exhibit G-1, and declares that it holds
and will hold such documents and the other documents delivered to it
constituting the Mortgage Files for the Mortgage Loans, and that it holds or
will hold such other assets as are included in the Trust Fund, in trust for
the exclusive use and benefit of all present and future Certificateholders.

      The Trustee acknowledges that it will maintain possession of the related
Mortgage Notes in the State of California, unless otherwise permitted by the
Rating Agencies. The Trustee agrees to execute and deliver on the Closing Date
to the Depositor, the Servicer and the Seller an Initial Certification in the
form of Exhibit G-1. Based on its review and examination, and only as to the
documents identified in such Initial Certification, the Trustee acknowledges
that such documents appear regular on their face and relate to such Mortgage
Loans. The Trustee shall be under no duty or obligation to inspect, review or
examine said documents, instruments, certificates or other papers to determine
that the same are genuine,


                                       52

<PAGE>

enforceable or appropriate for the represented purpose or that they have
actually been recorded in the real estate records or that they are other than
what they purport to be on their face.

      By the thirtieth day after the Closing Date (or if that day is not a
Business Day, the succeeding Business Day), the Trustee shall deliver to the
Depositor, the Servicer, and the Seller a Delay Delivery Certification with
respect to the Mortgage Loans substantially in the form of Exhibit G-3, with
any applicable exceptions noted thereon.

      By the ninetieth day after the Closing Date (or if that day is not a
Business Day, the succeeding Business Day), the Trustee shall deliver to the
Depositor, the Servicer and the Seller a Final Certification with respect to
the Mortgage Loans in the form of Exhibit H-1, with any applicable exceptions
noted thereon.

      If, in the course of its review, the Trustee finds any document
constituting a part of a Mortgage File that does not meet the requirements of
Section 2.01, the Trustee shall list such as an exception in the Final
Certification. The Trustee shall not make any determination as to whether (i)
any endorsement is sufficient to transfer all interest of the party so
endorsing, as noteholder or assignee thereof, in that Mortgage Note or (ii)
any assignment is in recordable form or is sufficient to effect the assignment
of and transfer to the assignee thereof under the mortgage to which the
assignment relates. The Seller shall promptly correct any defect that
materially and adversely affects the interests of the Certificateholders
within 90 days from the date it was so notified of the defect and, if the
Seller does not correct the defect within that period, the Seller shall either
(a) substitute for the related Mortgage Loan a Substitute Mortgage Loan, which
substitution shall be accomplished in the pursuant Section 2.03, or (b)
purchase the Mortgage Loan at its Purchase Price from the Trustee within 90
days from the date the Seller was notified of the defect in writing.

      If a substitution or purchase of a Mortgage Loan pursuant to this
provision is required because of a delay in delivery of any documents by the
appropriate recording office, or there is a dispute between either the
Servicer or the Seller and the Trustee over the location or status of the
recorded document, then the substitution or purchase shall occur within 720
days from the Closing Date. In no other case may a substitution or purchase
occur more than 540 days from the Closing Date.

      Any substitution shall not be effected before the delivery to the
Trustee of the Opinion of Counsel, if required by Section 2.05, and any
substitution shall not be effected before the additional delivery to the
Trustee of a Request for Release substantially in the form of Exhibit N. No
substitution is permitted to be made in any calendar month after the
Determination Date for the month.

      The Purchase Price for any Mortgage Loan shall be deposited by the
Seller in the Certificate Account by the Distribution Account Deposit Date for
the Distribution Date in the month following the month of repurchase and, upon
receipt of the deposit and certification with respect thereto in the form of
Exhibit N, the Trustee shall release the related Mortgage File to the Seller
and shall execute and deliver at the Seller's request any instruments of
transfer or assignment prepared by the Seller, in each case without recourse,
necessary to vest in the Seller, or a designee, the Trustee's interest in any
Mortgage Loan released pursuant hereto.

      If pursuant to the foregoing provisions the Seller repurchases a
Mortgage Loan that is a MERS Mortgage Loan, the Servicer shall either (i)
cause MERS to execute and deliver an assignment of the Mortgage in recordable
form to transfer the Mortgage from MERS to the Seller and shall cause such
Mortgage to be removed from registration on the MERS(R) System in accordance
with MERS' rules and regulations or (ii) cause MERS to designate on the
MERS(R) System the Seller as the beneficial holder of such Mortgage Loan.



                                     53

<PAGE>


      The Trustee shall retain possession and custody of each Mortgage File in
accordance with and subject to the terms and conditions set forth herein. The
Servicer shall promptly deliver to the Trustee, upon the execution or receipt
thereof, the originals of any other documents or instruments constituting the
Mortgage File that come into the possession of the Servicer from time to time.

      The obligation of the Seller to substitute for or to purchase any
Mortgage Loan that does not meet the requirements of Section 2.01 shall
constitute the sole remedy respecting the defect available to the Trustee, the
Depositor, and any Certificateholder against the Seller.

      Section 2.03. Representations, Warranties, and Covenants of the Seller
and the Servicer.

      (a) IndyMac, in its capacities as Seller and Servicer, makes the
representations and warranties in Schedule II, and by this reference
incorporated in this Agreement, to the Depositor and the Trustee, as of the
Closing Date.

      (b) The Seller, in its capacity as Seller, makes the representations and
warranties in Schedule III, and by this reference incorporated in this
Agreement, to the Depositor and the Trustee, as of the Closing Date, or if so
specified in Schedule III, as of the Cut-off Date.

      (c) Upon discovery by any of the parties hereto of a breach of a
representation or warranty made pursuant to Section 2.03(b) that materially
and adversely affects the interests of the Certificateholders in any Mortgage
Loan, the party discovering such breach shall give prompt notice thereof to
the other parties. Any breach of representations and warranties under clauses
(28) and (39) of Schedule III shall be deemed to affect materially and
adversely the interests of the Certificateholders in the affected Mortgage
Loans. The Seller covenants that within 90 days of the earlier of its
discovery or its receipt of written notice from any party of a breach of any
representation or warranty made pursuant to Section 2.03(b) which materially
and adversely affects the interests of the Certificateholders in any Mortgage
Loan, it shall cure such breach in all material respects, and if such breach
is not so cured, shall, (i) if the 90-day period expires before the second
anniversary of the Closing Date, remove the Mortgage Loan (a "Deleted Mortgage
Loan") from the Trust Fund and substitute in its place a Substitute Mortgage
Loan, in accordance with this Section 2.03; or (ii) repurchase the affected
Mortgage Loan or Mortgage Loans from the Trustee at the Purchase Price in the
manner set forth below. Any substitution pursuant to (i) above shall not be
effected before the delivery to the Trustee of the Opinion of Counsel, if
required by Section 2.05 and a Request for Release substantially in the form
of Exhibit N, and the Mortgage File for any Substitute Mortgage Loan. The
Seller shall promptly reimburse the Servicer and the Trustee for any expenses
reasonably incurred by the Servicer or the Trustee in respect of enforcing the
remedies for the breach.

      With respect to any Substitute Mortgage Loan or Loans, the Seller shall
deliver to the Trustee for the benefit of the Certificateholders the Mortgage
Note, the Mortgage, the related assignment of the Mortgage, and such other
documents and agreements as are required by Section 2.01, with the Mortgage
Note endorsed and the Mortgage assigned as required by Section 2.01. No
substitution is permitted to be made in any calendar month after the
Determination Date for such month. Scheduled Payments due with respect to
Substitute Mortgage Loans in the month of substitution shall not be part of
the Trust Fund and will be retained by the Seller on the next succeeding
Distribution Date. For the month of substitution, distributions to
Certificateholders will include the monthly payment due on any Deleted
Mortgage Loan for such month and thereafter the Seller shall be entitled to
retain all amounts received in respect of such Deleted Mortgage Loan.

      The Servicer shall amend the Mortgage Loan Schedule for the benefit of
the Certificateholders to reflect the removal of the Deleted Mortgage Loan and
the substitution of the Substitute Mortgage Loans

                                       54

<PAGE>


and the Servicer shall deliver the amended Mortgage Loan Schedule to the
Trustee. Upon the substitution, the Substitute Mortgage Loans shall be subject
to this Agreement in all respects, and the Seller shall be deemed to have made
with respect to the Substitute Mortgage Loans, as of the date of substitution,
the representations and warranties made pursuant to Section 2.03(b) with
respect to the Mortgage Loan. Upon any substitution and the deposit to the
Certificate Account of the amount required to be deposited therein in
connection with the substitution as described in the following paragraph, the
Trustee shall release the Mortgage File held for the benefit of the
Certificateholders relating to the Deleted Mortgage Loan to the Seller and
shall execute and deliver at the Seller's direction such instruments of
transfer or assignment prepared by the Seller, in each case without recourse,
as shall be necessary to vest title in the Seller, or its designee, the
Trustee's interest in any Deleted Mortgage Loan substituted for pursuant to
this Section 2.03.

      For any month in which the Seller substitutes one or more Substitute
Mortgage Loans for one or more Deleted Mortgage Loans, the Servicer will
determine the amount (if any) by which the aggregate principal balance of all
such Substitute Mortgage Loans as of the date of substitution is less than the
aggregate Stated Principal Balance of all such Deleted Mortgage Loans (after
application of the scheduled principal portion of the monthly payments due in
the month of substitution). The amount of such shortage (the "Substitution
Adjustment Amount") plus, if the Seller is not the Servicer, an amount equal
to the aggregate of any unreimbursed Advances and Servicer Advances with
respect to such Deleted Mortgage Loans shall be deposited into the Certificate
Account by the Seller by the Distribution Account Deposit Date for the
Distribution Date in the month succeeding the calendar month during which the
related Mortgage Loan became required to be purchased or replaced hereunder.
If the Seller repurchases a Mortgage Loan, the Purchase Price therefor shall
be deposited in the Certificate Account pursuant to Section 3.06 by the
Distribution Account Deposit Date for the Distribution Date in the month
following the month during which the Seller became obligated hereunder to
repurchase or replace the Mortgage Loan and upon such deposit of the Purchase
Price and receipt of a Request for Release in the form of Exhibit N, the
Trustee shall release the related Mortgage File held for the benefit of the
Certificateholders to such Person, and the Trustee shall execute and deliver
at such Person's direction such instruments of transfer or assignment prepared
by such Person, in each case without recourse, as shall be necessary to
transfer title from the Trustee. The obligation under this Agreement of any
Person to cure, repurchase, or replace any Mortgage Loan as to which a breach
has occurred and is continuing shall constitute the sole remedy against the
Person respecting the breach available to Certificateholders, the Depositor,
or the Trustee on their behalf.

      The representations and warranties made pursuant to this Section 2.03
shall survive delivery of the respective Mortgage Files to the Trustee for the
benefit of the Certificateholders and shall not be waived by the Depositor.

      The Seller assigns to the Depositor and the Depositor assigns to the
Trustee all rights the Seller might have under contracts with third parties
relating to early payment defaults on the Mortgage Loans ("EPD Rights") and
the Servicer assumes any related duties as part of its servicing obligations.
Consistent with the Servicing Standard, the Servicer shall attempt to enforce
the EPD Rights. If the Servicer's enforcement of the EPD Rights obligates the
Servicer to sell a Mortgage Loan to a third party, the Servicer shall
repurchase the Mortgage Loan at the Purchase Price and sell the Mortgage Loan
to the third party, provided however, in no case shall the Servicer be
obligated to repurchase a Mortgage Loan on account of EPD Rights unless and
until the Servicer shall have previously received repurchase payment from a
third party. The Servicer shall deposit into the Certificate Account all
amounts received in connection with the enforcement of EPD Rights, not
exceeding the Purchase Price, with respect to any Mortgage Loan. Any amounts
received by the Servicer with respect a Mortgage Loan in excess of the
Purchase Price shall be retained by the Servicer as additional servicing
compensation. The Trustee, upon receipt of certification from the Servicer of
the deposit of the Purchase Price in connection with a


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repurchase of a Mortgage Loan and a Request for Release from the Servicer,
shall release or cause to be released to the purchaser of such Mortgage Loan
the related Mortgage File and shall execute and deliver such instruments of
transfer or assignment prepared by the purchaser of such Mortgage Loan, in
each case without recourse, as shall be necessary to vest in the purchaser of
such Mortgage Loan any Mortgage Loan released pursuant hereto and the
purchaser of such Mortgage Loan shall succeed to all the Trustee's right,
title and interest in and to such Mortgage Loan and all security and documents
related thereto. Such assignment shall be an assignment outright and not for
security. The purchaser of such Mortgage Loan shall thereupon own such
Mortgage Loan, and all security and documents, free of any further obligation
to the Trustee or the Certificateholders with respect thereto.

      Section 2.04. Representations and Warranties of the Depositor as to the
Mortgage Loans.

      The Depositor represents and warrants to the Trustee with respect to
each Mortgage Loan as of the date of this Agreement or such other date set
forth in this Agreement that as of the Closing Date, and following the
transfer of the Mortgage Loans to it by the Seller, the Depositor had good
title to the Mortgage Loans and the Mortgage Notes were subject to no offsets,
defenses, or counterclaims.

      The representations and warranties in this Section 2.04 shall survive
delivery of the Mortgage Files to the Trustee. Upon discovery by the Depositor
or the Trustee of any breach of any of the representations and warranties in
this Section that materially and adversely affects the interest of the
Certificateholders, the party discovering the breach shall give prompt written
notice to the others and to each Rating Agency.

      Section 2.05. Delivery of Opinion of Counsel in Connection with
Substitutions.

      (a) Notwithstanding any contrary provision of this Agreement, no
substitution pursuant to Section 2.02 or 2.03 shall be made more than 90 days
after the Closing Date unless the Seller delivers to the Trustee an Opinion of
Counsel, which Opinion of Counsel shall not be at the expense of either the
Trustee or the Trust Fund, addressed to the Trustee, to the effect that such
substitution will not (i) result in the imposition of the tax on "prohibited
transactions" on the Trust Fund or contributions after the Startup Date, as
defined in sections 860F(a)(2) and 860G(d) of the Code, respectively or (ii)
cause any REMIC created under this Agreement to fail to qualify as a REMIC at
any time that any Certificates are outstanding.

      (b) Upon discovery by the Depositor, the Seller, the Servicer or the
Trustee that any Mortgage Loan does not constitute a "qualified mortgage"
within the meaning of section 860G(a)(3) of the Code, the party discovering
such fact shall promptly (and in any event within five Business Days of
discovery) give written notice thereof to the other parties. In connection
therewith, the Trustee shall require the Seller, at the Seller's option, to
either (i) substitute, if the conditions in Section 2.03(c) with respect to
substitutions are satisfied, a Substitute Mortgage Loan for the affected
Mortgage Loan, or (ii) repurchase the affected Mortgage Loan within 90 days of
such discovery in the same manner as it would a Mortgage Loan for a breach of
representation or warranty made pursuant to Section 2.03. The Trustee shall
reconvey to the Seller the Mortgage Loan to be released pursuant hereto in the
same manner, and on the same terms and conditions, as it would a Mortgage Loan
repurchased for breach of a representation or warranty contained in Section
2.03.

      Section 2.06. Execution and Delivery of Certificates.

      The Trustee acknowledges the transfer and assignment to it of the Trust
Fund and, concurrently with such transfer and assignment, has executed and
delivered to or upon the order of the Depositor, the Certificates in
authorized denominations evidencing directly or indirectly the entire
ownership of the

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Trust Fund. The Trustee agrees to hold the Trust Fund and exercise the rights
referred to above for the benefit of all present and future Holders of the
Certificates.

      Section 2.07. REMIC Matters.

      The Preliminary Statement sets forth the designations and "latest
possible maturity date" for federal income tax purposes of all interests
created under this Agreement. The "Startup Day" for purposes of the REMIC
Provisions shall be the Closing Date. Each REMIC's fiscal year shall be the
calendar year.





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                                ARTICLE THREE

                ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

      Section 3.01. Servicer to Service Mortgage Loans.

      For and on behalf of the Certificateholders, the Servicer shall service
and administer the Mortgage Loans in accordance with this Agreement and the
Servicing Standard.

      The Servicer shall not make or permit any modification, waiver, or
amendment of any term of any Mortgage Loan that would cause any REMIC created
under this Agreement to fail to qualify as a REMIC or result in the imposition
of any tax under section 860F(a) or section 860G(d) of the Code.

      Without limiting the generality of the foregoing, the Servicer, in its
own name or in the name of the Depositor and the Trustee, is hereby authorized
and empowered by the Depositor and the Trustee, when the Servicer believes it
appropriate in its reasonable judgment, to execute and deliver, on behalf of
the Trustee, the Depositor, the Certificateholders, or any of them, any
instruments of satisfaction or cancellation, or of partial or full release or
discharge, and all other comparable instruments, with respect to the Mortgage
Loans, and with respect to the Mortgaged Properties held for the benefit of
the Certificateholders. The Servicer shall prepare and deliver to the
Depositor or the Trustee any documents requiring execution and delivery by
either or both of them appropriate to enable the Servicer to service and
administer the Mortgage Loans to the extent that the Servicer is not permitted
to execute and deliver such documents pursuant to the preceding sentence. Upon
receipt of the documents, the Depositor or the Trustee shall execute the
documents and deliver them to the Servicer.

       The Servicer further is authorized and empowered by the Trustee, on
behalf of the Certificateholders and the Trustee, in its own name, when the
Servicer believes it appropriate in its best judgment to register any Mortgage
Loan on the MERS(R) System, or cause the removal from the registration of any
Mortgage Loan on the MERS(R) System, to execute and deliver, on behalf of the
Trustee and the Certificateholders or any of them, any and all instruments of
assignment and other comparable instruments with respect to such assignment or
re-recording of a Mortgage in the name of MERS, solely as nominee for the
Trustee and its successors and assigns.

      In accordance with and to the extent of the Servicing Standard, the
Servicer shall advance funds necessary to effect the payment of taxes and
assessments on the Mortgaged Properties, which advances shall be reimbursable
in the first instance from related collections from the Mortgagors pursuant to
Section 3.07, and further as provided in Section 3.09. The costs incurred by
the Servicer in effecting the timely payments of taxes and assessments on the
Mortgaged Properties and related insurance premiums shall not, for the purpose
of calculating monthly distributions to the Certificateholders, be added to
the Stated Principal Balances of the related Mortgage Loans, notwithstanding
that the Mortgage Loans so permit.

      Nothing in this Agreement to the contrary shall limit the Servicer from
undertaking any legal action that it may deem appropriate with respect to the
Mortgage Loans including, without limitation, any rights or causes of action
arising out of the origination of the Mortgage Loans.



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      Section 3.02. [Reserved].

      Section 3.03. Rights of the Depositor and the Trustee in Respect of the
                    Servicer.

      The Depositor may, but is not obligated to, enforce the obligations of
the Servicer under this Agreement and may, but is not obligated to, perform,
or cause a designee to perform, any defaulted obligation of the Servicer under
this Agreement and in connection with any such defaulted obligation to
exercise the related rights of the Servicer under this Agreement; provided
that the Servicer shall not be relieved of any of its obligations under this
Agreement by virtue of such performance by the Depositor or its designee.
Neither the Trustee nor the Depositor shall have any responsibility or
liability for any action or failure to act by the Servicer nor shall the
Trustee or the Depositor be obligated to supervise the performance of the
Servicer under this Agreement or otherwise.

      Section 3.04. [Reserved].

      Section 3.05. Trustee to Act as Servicer.

      If the Servicer for any reason is no longer the Servicer under this
Agreement (including because of the occurrence or existence of an Event of
Default or termination by the Depositor), the Trustee or its successor shall
assume all of the rights and obligations of the Servicer under this Agreement
arising thereafter (except that the Trustee shall not be

            (i) liable for losses of the Servicer pursuant to Section 3.10 or
      any acts or omissions of the predecessor Servicer hereunder,

            (ii) obligated to make Advances if it is prohibited from doing so
       by applicable law,

            (iii) obligated to effectuate repurchases or substitutions of
      Mortgage Loans hereunder, including repurchases or substitutions
      pursuant to Section 2.02 or 2.03,

            (iv) responsible for expenses of the Servicer pursuant to Section
      2.03, or

            (v) deemed to have made any representations and warranties of the
      Servicer hereunder). Any assumption shall be subject to Section 7.02.

      Notwithstanding anything else in this Agreement to the contrary, in no
event shall the Trustee be liable for any servicing fee or for any
differential in the amount of the Servicing Fee paid under this Agreement and
the amount necessary to induce any successor Servicer to act as successor
Servicer under this Agreement and the transactions provided for in this
Agreement.

      Section 3.06. Collection of Mortgage Loan Payments; Certificate Account;
                    Distribution Account.

      (a) In accordance with and to the extent of the Servicing Standard, the
Servicer shall make reasonable efforts in accordance with the customary and
usual standards of practice of prudent mortgage servicers to collect all
payments called for under the Mortgage Loans to the extent the procedures are
consistent with this Agreement and any related Required Insurance Policy.
Consistent with the foregoing, the Servicer may in its discretion (i) waive
any late payment charge or, subject to Section 3.21, any Prepayment Charge in
connection with the prepayment of a Mortgage Loan and (ii) extend the due
dates for payments due on a Delinquent Mortgage Loan for a period not greater
than 125 days. In connection with a seriously delinquent or defaulted Mortgage
Loan, the Servicer may, consistent with the Servicing


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Standard, waive, modify or vary any term of that Mortgage Loan (including
modifications that change the Mortgage Rate, forgive the payment of principal
or interest or extend the final maturity date of that Mortgage Loan ), accept
payment from the related Mortgagor of an amount less than the Stated Principal
Balance in final satisfaction of that Mortgage Loan, or consent to the
postponement of strict compliance with any such term or otherwise grant
indulgence to any Mortgagor if in the Servicer's determination such waiver,
modification, postponement or indulgence is not materially adverse to the
interests of the Certificateholders (taking into account any estimated loss
that might result absent such action) and is expected to minimize the loss on
such Mortgage Loan; provided, however, the Servicer shall not initiate new
lending to such Mortgagor through the Trust and cannot, except as provided in
the immediately succeeding sentence, extend the maturity of any Mortgage Loan
past the date on which the final payment is due on the latest maturing
Mortgage Loan as of the Cut-off Date. With respect to no more than 5% of the
Mortgage Loans (measured by aggregate Cut-off Date Principal Balance of the
Mortgage Loans), the Servicer may extend the maturity of a Mortgage Loan past
the date on which the final payment is due on the latest maturing Mortgage
Loan as of the Cut-off Date, but in no event more than one year past such
date. In the event of any such arrangement, the Servicer shall make Advances
on the related Mortgage Loan in accordance with Section 4.01 during the
scheduled period in accordance with the amortization schedule of the Mortgage
Loan without modification thereof because of the arrangements. The Servicer
shall not be required to institute or join in litigation with respect to
collection of any payment (whether under a Mortgage, Mortgage Note, or
otherwise or against any public or governmental authority with respect to a
taking or condemnation) if it reasonably believes that enforcing the provision
of the Mortgage or other instrument pursuant to which the payment is required
is prohibited by applicable law. The Servicer shall not have the discretion to
sell any Delinquent or defaulted Mortgage Loan.

      (b) [Reserved].

      (c) [Reserved].

      (d) The Servicer shall establish and maintain a Certificate Account into
which the Servicer shall deposit on a daily basis (1) within two Business Days
of receipt (in the case of items (i) through (iii) below) and (2) within one
Business Day of receipt (in the case of all other items), except as otherwise
specified herein, the following payments and collections received by it in
respect of Mortgage Loans after the Cut-off Date (other than in respect of
principal and interest due on the Mortgage Loans by the Cut-off Date) and the
following amounts required to be deposited hereunder:

            (i) all payments on account of principal on the Mortgage Loans,
      including Principal Prepayments;

            (ii) all payments on account of interest on the Mortgage Loans,
      net of the Prepayment Interest Excess and of the Servicing Fee;

            (iii) all Insurance Proceeds, Subsequent Recoveries and
      Liquidation Proceeds, other than proceeds to be applied to the
      restoration or repair of the Mortgaged Property or released to the
      Mortgagor in accordance with the Servicer's normal servicing procedures;

            (iv) any amount required to be deposited by the Servicer pursuant
      to Section 3.06(f) in connection with any losses on Permitted
      Investments;

            (v) any amounts required to be deposited by the Servicer pursuant
      to Sections 3.10 and 3.12;



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            (vi) all Purchase Prices from the Servicer or Seller and all
      Substitution Adjustment Amounts;

            (vii) all Advances made by the Servicer pursuant to Section 4.01;

            (viii) any other amounts required to be deposited under this
      Agreement; and

            (ix) all Prepayment Charges collected.

      In addition, with respect to any Mortgage Loan that is subject to a
buydown agreement, on each Due Date for the Mortgage Loan, in addition to the
monthly payment remitted by the Mortgagor, the Servicer shall cause funds to
be deposited into the Certificate Account in an amount required to cause an
amount of interest to be paid with respect to the Mortgage Loan equal to the
amount of interest that has accrued on the Mortgage Loan from the preceding
Due Date at the Mortgage Rate net of the Servicing Fee Rate on that date.

      The foregoing requirements for remittance by the Servicer shall be
exclusive, it being understood and agreed that, without limiting the
generality of the foregoing, payments in the nature of late payment charges or
assumption fees, if collected, need not be remitted by the Servicer. If the
Servicer remits any amount not required to be remitted, it may at any time
withdraw that amount from the Certificate Account, any provision in this
Agreement to the contrary notwithstanding. The withdrawal or direction may be
accomplished by delivering written notice of it to the Trustee or any other
institution maintaining the Certificate Account that describes the amounts
deposited in error in the Certificate Account. The Servicer shall maintain
adequate records with respect to all withdrawals made pursuant to this Section
3.06. All funds deposited in the Certificate Account shall be held in trust
for the Certificateholders until withdrawn in accordance with Section 3.09.

      (e) The Trustee shall establish and maintain the Distribution Account on
behalf of the Certificateholders. The Trustee shall, promptly upon receipt,
deposit in the Distribution Account and retain in the Distribution Account the
following:

            (i) the aggregate amount remitted by the Servicer to the Trustee
      pursuant to Section 3.09(a);

            (ii) any amount deposited by the Servicer pursuant to Section
      3.06(f) in connection with any losses on Permitted Investments; and

            (iii) any other amounts deposited under this Agreement that are
      required to be deposited in the Distribution Account.

      If the Servicer remits any amount not required to be remitted, it may at
any time direct the Trustee in writing to withdraw that amount from the
Distribution Account, any provision in this Agreement to the contrary
notwithstanding. The direction may be accomplished by delivering an Officer's
Certificate to the Trustee that describes the amounts deposited in error in
the Distribution Account. All funds deposited in the Distribution Account
shall be held by the Trustee in trust for the Certificateholders until
disbursed in accordance with this Agreement or withdrawn in accordance with
Section 3.09. In no event shall the Trustee incur liability for withdrawals
from the Distribution Account at the direction of the Servicer.

      (f) Each institution at which the Certificate Account is maintained
shall invest the funds in such account as directed in writing by the Servicer
in Permitted Investments, which shall mature not later


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than the second Business Day preceding the related Distribution Account
Deposit Date (except that if the Permitted Investment is an obligation of the
institution that maintains the account, then the Permitted Investment shall
mature not later than the Business Day preceding the Distribution Account
Deposit Date) and which shall not be sold or disposed of before its maturity.
The funds in the Distribution Account shall remain uninvested. All such
Permitted Investments shall be made in the name of the Trustee, for the
benefit of the Certificateholders. All income realized from any such
investment of funds on deposit in the Certificate Account shall be for the
benefit of the Servicer as servicing compensation and shall be remitted to it
monthly as provided in this Agreement. The amount of any realized losses on
Permitted Investments in the Certificate Account shall promptly be deposited
by the Servicer in the Certificate Account. The Trustee shall not be liable
for the amount of any loss incurred in respect of any investment or lack of
investment of funds held in the Certificate Account and made in accordance
with this Section 3.06.

      (g) [Reserved]

      (h) The Servicer shall give notice to the Trustee, the Seller, each
Rating Agency and the Depositor of any proposed change of the location of the
Certificate Account not later than 30 days and not more than 45 days prior to
any change of this Agreement. The Trustee shall give notice to the Servicer,
the Seller, each Rating Agency and the Depositor of any proposed change of the
location of the Distribution Account not later than 30 days and not more than
45 days prior to any change of this Agreement.

      Section 3.07. Collection of Taxes, Assessments and Similar Items; Escrow
                    Accounts.

      (a) To the extent required by the related Mortgage Note and not
violative of current law, the Servicer shall establish and maintain one or
more accounts (each, an "Escrow Account") and deposit and retain therein all
collections from the Mortgagors (or advances) for the payment of taxes,
assessments, hazard insurance premiums or comparable items for the account of
the Mortgagors. Nothing herein shall require the Servicer to compel a
Mortgagor to establish an Escrow Account in violation of applicable law.

      (b) Withdrawals of amounts so collected from the Escrow Accounts may be
made only to effect timely payment of taxes, assessments, hazard insurance
premiums, condominium or PUD association dues, or comparable items, to
reimburse (without duplication) the Servicer out of related collections for
any payments made pursuant to Section 3.01 (with respect to taxes and
assessments and insurance premiums) and Section 3.10 (with respect to hazard
insurance), to refund to any Mortgagors any sums determined to be overages, to
pay interest, if required by law or the related Mortgage or Mortgage Note, to
Mortgagors on balances in the Escrow Account or to clear and terminate the
Escrow Account at the termination of this Agreement in accordance with Section
9.01. The Escrow Accounts shall not be a part of the Trust Fund.

      (c) The Servicer shall advance any payments referred to in Section
3.07(a) that are not timely paid by the Mortgagors or advanced by the Servicer
on the date when the tax, premium or other cost for which such payment is
intended is due, but the Servicer shall be required so to advance only to the
extent that such advances, in the good faith judgment of the Servicer, will be
recoverable by the Servicer out of Insurance Proceeds, Liquidation Proceeds or
otherwise.

      Section 3.08. Access to Certain Documentation and Information Regarding
                     the Mortgage Loans.

      The Servicer shall afford the Depositor and the Trustee reasonable
access to all records and documentation regarding the Mortgage Loans and all
accounts, insurance information and other matters

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relating to this Agreement, such access being afforded without charge, but
only upon reasonable request and during normal business hours at the office
designated by the Servicer.

      Upon reasonable advance notice in writing, the Servicer will provide to
each Certificateholder or Certificate Owner that is a savings and loan
association, bank, or insurance company certain reports and reasonable access
to information and documentation regarding the Mortgage Loans sufficient to
permit the Certificateholder or Certificate Owner to comply with applicable
regulations of the OTS or other regulatory authorities with respect to
investment in the Certificates. The Servicer shall be entitled to be
reimbursed by each such Certificateholder or Certificate Owner for actual
expenses incurred by the Servicer in providing the reports and access.

      Section 3.09. Permitted Withdrawals from the Certificate Account and the
                    Distribution Account.

      (a) The Servicer may (and, in the case of clause (ix) below, shall) from
time to time make withdrawals from the Certificate Account for the following
purposes:

            (i) to pay to the Servicer (to the extent not previously retained)
      the servicing compensation to which it is entitled pursuant to Section
      3.15, and to pay to the Servicer, as additional servicing compensation,
      earnings on or investment income with respect to funds in or credited to
      the Certificate Account;

            (ii) to reimburse the Servicer or successor Servicer for the
      unreimbursed Advances made by it, such right of reimbursement pursuant
      to this subclause (ii) being limited to amounts received on the Mortgage
      Loans in respect of which the Advance was made;

             (iii) to reimburse the Servicer or successor Servicer for any
      Nonrecoverable Advance previously made by it;

            (iv) to reimburse the Servicer for Insured Expenses from the
      related Insurance Proceeds;

            (v) to reimburse the Servicer for (a) unreimbursed Servicing
      Advances, the Servicer's right to reimbursement pursuant to this clause
      (a) with respect to any Mortgage Loan being limited to amounts received
      on the Mortgage Loans that represent late recoveries of the payments for
      which the advances were made pursuant to Section 3.01 or Section 3.07,
      (b) unreimbursed Servicing Advances made in respect of a Mortgage Loan
      for which such Servicing Advances are not recoverable from the Mortgagor
      and (c) for unpaid Servicing Fees as provided in Section 3.12;

            (vi) to pay to the purchaser, with respect to each Mortgage Loan
      or property acquired in respect of such Mortgage Loan that has been
      purchased pursuant to Section 2.02, 2.03, or 3.12, all amounts received
      thereon after the date of such purchase;

            (vii) to reimburse the Seller, the Servicer, or the Depositor for
      expenses incurred by any of them and reimbursable pursuant to Section
      6.03;

            (viii) to withdraw any amount deposited in the Certificate Account
      and not required to be deposited in the Certificate Account;



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            (ix) by the Distribution Account Deposit Date, to withdraw (1) the
      Group I Available Funds and the Trustee Fee for the Distribution Date,
      to the extent on deposit, and (2) the Prepayment Charges on deposit, and
      remit such amount to the Trustee for deposit in the Distribution
      Account; and

            (x) to clear and terminate the Certificate Account upon
      termination of this Agreement pursuant to Section 9.01.

      The Servicer shall keep and maintain separate accounting, on a Mortgage
Loan by Mortgage Loan basis, to justify any withdrawal from the Certificate
Account pursuant to subclauses (i), (ii), (iv), (v) and (vi). Before making
any withdrawal from the Certificate Account pursuant to subclause (iii), the
Servicer shall deliver to the Trustee an Officer's Certificate of a Servicing
Officer indicating the amount of any previous Advance determined by the
Servicer to be a Nonrecoverable Advance and identifying the related Mortgage
Loans and their respective portions of the Nonrecoverable Advance.

      (b) The Trustee shall withdraw funds from the Distribution Account for
distributions to Certificateholders in the manner specified in this Agreement
(and to withhold from the amounts so withdrawn the amount of any taxes that it
is authorized to withhold pursuant to the third paragraph of Section 8.11). In
addition, the Trustee may from time to time make withdrawals from the
Distribution Account for the following purposes:

            (i) to pay to itself the Trustee Fee for the related Distribution
      Date;

             (ii) to withdraw and return to the Servicer any amount deposited
      in the Distribution Account and not required to be deposited therein;
      and

            (iii) to clear and terminate the Distribution Account upon
      termination of the Agreement pursuant to Section 9.01.

      Section 3.10. Maintenance of Hazard Insurance; Maintenance of Primary
                    Insurance Policies.

      (a) The Servicer shall maintain, for each Mortgage Loan, hazard
insurance with extended coverage in an amount that is at least equal to the
lesser of

            (i) the maximum insurable value of the improvements securing the
      Mortgage Loan and

            (ii) the greater of (y) the outstanding principal balance of the
      Mortgage Loan and (z) an amount such that the proceeds of the policy are
      sufficient to prevent the Mortgagor or the mortgagee from becoming a
      co-insurer.

      Each policy of standard hazard insurance shall contain, or have an
accompanying endorsement that contains, a standard mortgagee clause. Any
amounts collected under the policies (other than the amounts to be applied to
the restoration or repair of the related Mortgaged Property or amounts
released to the Mortgagor in accordance with the Servicer's normal servicing
procedures) shall be deposited in the Certificate Account. Any cost incurred
in maintaining any insurance shall not, for the purpose of calculating monthly
distributions to the Certificateholders or remittances to the Trustee for
their benefit, be added to the principal balance of the Mortgage Loan,
notwithstanding that the Mortgage Loan so permits. Such costs shall be
recoverable by the Servicer out of late payments by the related Mortgagor or
out of Liquidation Proceeds to the extent permitted by Section 3.09. No
earthquake or other additional

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insurance is to be required of any Mortgagor or maintained on property
acquired in respect of a Mortgage other than pursuant to any applicable laws
and regulations in force that require additional insurance. If the Mortgaged
Property is located at the time of origination of the Mortgage Loan in a
federally designated special flood hazard area and the area is participating
in the national flood insurance program, the Servicer shall maintain flood
insurance for the Mortgage Loan. The flood insurance shall be in an amount
equal to the least of (i) the original principal balance of the related
Mortgage Loan, (ii) the replacement value of the improvements that are part of
the Mortgaged Property, and (iii) the maximum amount of flood insurance
available for the related Mortgaged Property under the national flood
insurance program.

      If the Servicer obtains and maintains a blanket policy insuring against
hazard losses on all of the Mortgage Loans, it shall have satisfied its
obligations in the first sentence of this Section 3.10. The policy may contain
a deductible clause on terms substantially equivalent to those commercially
available and maintained by comparable servicers. If the policy contains a
deductible clause and a policy complying with the first sentence of this
Section 3.10 has not been maintained on the related Mortgaged Property, and if
a loss that would have been covered by the required policy occurs, the
Servicer shall deposit in the Certificate Account, without any right of
reimbursement, the amount not otherwise payable under the blanket policy
because of the deductible clause. In connection with its activities as
Servicer of the Mortgage Loans, the Servicer agrees to present, on behalf of
itself, the Depositor, and the Trustee for the benefit of the
Certificateholders, claims under any blanket policy.

      (b) The Servicer shall not take any action that would result in
non-coverage under any applicable Primary Insurance Policy of any loss that,
but for the actions of the Servicer, would have been covered thereunder. The
Servicer shall not cancel or refuse to renew any Primary Insurance Policy that
is in effect at the date of the initial issuance of the Certificates and is
required to be kept in force hereunder unless the replacement Primary
Insurance Policy for the canceled or non-renewed policy is maintained with a
Qualified Insurer. The Servicer need not maintain any Primary Insurance Policy
if maintaining the Primary Insurance Policy is prohibited by applicable law.
The Servicer agrees, to the extent permitted by applicable law, to effect the
timely payment of the premiums on each Primary Insurance Policy, and any costs
not otherwise recoverable shall be recoverable by the Servicer from the
related liquidation proceeds.

      In connection with its activities as Servicer of the Mortgage Loans, the
Servicer agrees to present, on behalf of itself, the Trustee and the
Certificateholders, claims to the insurer under any Primary Insurance Policies
and, in this regard, to take any reasonable action in accordance with the
Servicing Standard necessary to permit recovery under any Primary Insurance
Policies respecting defaulted Mortgage Loans. Any amounts collected by the
Servicer under any Primary Insurance Policies shall be deposited in the
Certificate Account.

      Section 3.11. Enforcement of Due-On-Sale Clauses; Assumption Agreements.

      (a) Except as otherwise provided in this Section 3.11, when any property
subject to a Mortgage has been conveyed by the Mortgagor, the Servicer shall
to the extent that it has knowledge of the conveyance and in accordance with
the Servicing Standard, enforce any due-on-sale clause contained in any
Mortgage Note or Mortgage, to the extent permitted under applicable law and
governmental regulations, but only to the extent that enforcement will not
adversely affect or jeopardize coverage under any Required Insurance Policy.
Notwithstanding the foregoing, the Servicer is not required to exercise these
rights with respect to a Mortgage Loan if the Person to whom the related
Mortgaged Property has been conveyed or is proposed to be conveyed satisfies
the conditions contained in the Mortgage Note and Mortgage related thereto and
the consent of the mortgagee under the Mortgage Note or Mortgage is not
otherwise so required under the Mortgage Note or Mortgage as a condition to
the transfer.



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<PAGE>


      If (i) the Servicer is prohibited by law from enforcing any due-on-sale
clause, (ii) coverage under any Required Insurance Policy would be adversely
affected, (iii) the Mortgage Note does not include a due-on-sale clause, or
(iv) nonenforcement is otherwise permitted hereunder, the Servicer is
authorized, subject to Section 3.11(b), to take or enter into an assumption
and modification agreement from or with the person to whom the property has
been or is about to be conveyed, pursuant to which the person becomes liable
under the Mortgage Note and, unless prohibited by applicable state law, the
Mortgagor remains liable thereon. The Mortgage Loan must continue to be
covered (if so covered before the Servicer enters into the agreement) by the
applicable Required Insurance Policies.

       The Servicer, subject to Section 3.11(b), is also authorized with the
prior approval of the insurers under any Required Insurance Policies to enter
into a substitution of liability agreement with the Person, pursuant to which
the original Mortgagor is released from liability and the Person is
substituted as Mortgagor and becomes liable under the Mortgage Note.
Notwithstanding the foregoing, the Servicer shall not be deemed to be in
default under this Section 3.11 because of any transfer or assumption that the
Servicer reasonably believes it is restricted by law from preventing, for any
reason whatsoever.

      (b) Subject to the Servicer's duty to enforce any due-on-sale clause to
the extent set forth in Section 3.11(a), in any case in which a Mortgaged
Property has been conveyed to a Person by a Mortgagor, and the Person is to
enter into an assumption agreement or modification agreement or supplement to
the Mortgage Note or Mortgage that requires the signature of the Trustee, or
if an instrument of release signed by the Trustee is required releasing the
Mortgagor from liability on the Mortgage Loan, the Servicer shall prepare and
deliver to the Trustee for signature and shall direct the Trustee, in writing,
to execute the assumption agreement with the Person to whom the Mortgaged
Property is to be conveyed, and the modification agreement or supplement to
the Mortgage Note or Mortgage or other instruments appropriate to carry out
the terms of the Mortgage Note or Mortgage or otherwise to comply with any
applicable laws regarding assumptions or the transfer of the Mortgaged
Property to the Person. In connection with any such assumption, no material
term of the Mortgage Note may be changed.

      In addition, the substitute Mortgagor and the Mortgaged Property must be
acceptable to the Servicer in accordance with its underwriting standards as
then in effect. Together with each substitution, assumption, or other
agreement or instrument delivered to the Trustee for execution by it, the
Servicer shall deliver an Officer's Certificate signed by a Servicing Officer
stating that the requirements of this subsection have been met in connection
with such Officer's Certificate. The Servicer shall notify the Trustee that
any substitution or assumption agreement has been completed by forwarding to
the Trustee the original of the substitution or assumption agreement, which in
the case of the original shall be added to the related Mortgage File and
shall, for all purposes, be considered a part of the Mortgage File to the same
extent as all other documents and instruments constituting a part of the
Mortgage File. The Servicer will retain any fee collected by it for entering
into an assumption or substitution of liability agreement as additional
servicing compensation.

      Section 3.12. Realization Upon Defaulted Mortgage Loans.

      The Servicer shall use reasonable efforts in accordance with the
Servicing Standard to foreclose on or otherwise comparably convert the
ownership of assets securing such of the Mortgage Loans as come into and
continue in default and as to which no satisfactory arrangements can be made
for collection of delinquent payments. In connection with the foreclosure or
other conversion, the Servicer shall follow the Servicing Standard and shall
follow the requirements of the insurer under any Required Insurance Policy.
The Servicer shall not be required to expend its own funds in connection with
any foreclosure or towards the restoration of any property unless it
determines (i) that the restoration or foreclosure will increase the proceeds
of liquidation of the Mortgage Loan after reimbursement to itself of
restoration





                                      66

<PAGE>

expenses and (ii) that restoration expenses will be recoverable to it through
Liquidation Proceeds (respecting which it shall have priority for purposes of
withdrawals from the Certificate Account). The Servicer shall be responsible
for all other costs and expenses incurred by it in any foreclosure
proceedings. The Servicer is entitled to reimbursement of such costs and
expenses from the liquidation proceeds with respect to the related Mortgaged
Property, as provided in the definition of Liquidation Proceeds. If the
Servicer has knowledge that a Mortgaged Property that the Servicer is
contemplating acquiring in foreclosure or by deed in lieu of foreclosure is
located within a one mile radius of any site listed in the Expenditure Plan
for the Hazardous Substance Clean Up Bond Act of 1984 or other site with
environmental or hazardous waste risks known to the Servicer, the Servicer
will, before acquiring the Mortgaged Property, consider the risks and only
take action in accordance with its established environmental review
procedures.

      With respect to any REO Property, the deed or certificate of sale shall
be taken in the name of the Trustee for the benefit of the Certificateholders,
or its nominee, on behalf of the Certificateholders. The Trustee's name shall
be placed on the title to the REO Property solely as the Trustee hereunder and
not in its individual capacity. The Servicer shall ensure that the title to
the REO Property references the Pooling and Servicing Agreement and the
Trustee's capacity hereunder. Pursuant to its efforts to sell the REO
Property, the Servicer shall either itself or through an agent selected by the
Servicer protect and conserve the REO Property in accordance with the
Servicing Standard.

      The Servicer shall perform the tax reporting and withholding required by
sections 1445 and 6050J of the Code with respect to foreclosures and
abandonments, the tax reporting required by section 6050H of the Code with
respect to the receipt of mortgage interest from individuals and, if required
by section 6050P of the Code with respect to the cancellation of indebtedness
by certain financial entities, by preparing any required tax and information
returns, in the form required.

      If the Trust Fund acquires any Mortgaged Property as aforesaid or
otherwise in connection with a default or imminent default on a Mortgage Loan,
the REO Property shall only be held temporarily, shall be actively marketed
for sale, and the Servicer shall dispose of the Mortgaged Property as soon as
practicable, and in any case before the end of the third calendar year
following the calendar year in which the Trust Fund acquires the property.
Notwithstanding any other provision of this Agreement, no Mortgaged Property
acquired by the Trust Fund shall be rented (or allowed to continue to be
rented) or otherwise used for the production of income by or on behalf of the
Trust Fund.

      The decision of the Servicer to foreclose on a defaulted Mortgage Loan
shall be subject to a determination by the Servicer that the proceeds of the
foreclosure would exceed the costs and expenses of bringing a foreclosure
proceeding. The proceeds received from the maintenance of any REO Properties,
net of reimbursement to the Servicer for costs incurred (including any
property or other taxes) in connection with maintenance of the REO Properties
and net of unreimbursed Servicing Fees, Advances, and Servicing Advances,
shall be applied to the payment of principal of and interest on the related
defaulted Mortgage Loans (with interest accruing as though the Mortgage Loans
were still current and adjustments, if applicable, to the Mortgage Rate were
being made in accordance with the Mortgage Note) and all such proceeds shall
be deemed, for all purposes in this Agreement, to be payments on account of
principal and interest on the related Mortgage Notes and shall be deposited
into the Certificate Account. To the extent the net proceeds received during
any calendar month exceeds the amount attributable to amortizing principal and
accrued interest at the related Mortgage Rate on the related Mortgage Loan for
the calendar month, the excess shall be considered to be a partial prepayment
of principal of the related Mortgage Loan.

      The proceeds from any liquidation of a Mortgage Loan, as well as any
proceeds from an REO Property, will be applied in the following order of
priority: first, to reimburse the Servicer for any related


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<PAGE>


unreimbursed Servicing Advances or Servicing Fees or for any related
unreimbursed Advances, as applicable; second, to reimburse the Servicer, as
applicable, and to reimburse the Certificate Account for any Nonrecoverable
Advances (or portions thereof) that were previously withdrawn by the Servicer
pursuant to Section 3.09(a)(iii) that related to the Mortgage Loan; third, to
accrued and unpaid interest (to the extent no Advance has been made for such
amount or any such Advance has been reimbursed) on the Mortgage Loan or
related REO Property, at the Adjusted Net Mortgage Rate to the Due Date
occurring in the month in which such amounts are required to be distributed;
and fourth, as a recovery of principal of the Mortgage Loan. The Servicer will
retain any Excess Proceeds from the liquidation of a Liquidated Mortgage Loan
as additional servicing compensation pursuant to Section 3.15.

      The Servicer may agree to a modification of any Mortgage Loan at the
request of the related Mortgagor if (i) the modification is in lieu of a
refinancing and (ii) the Servicer purchases that Mortgage Loan from the Trust
Fund as described below. Upon the agreement of the Servicer to modify a
Mortgage Loan in accordance with the preceding sentence, the Servicer shall
purchase that Mortgage Loan and all interest of the Trustee in that Mortgage
Loan shall automatically be deemed transferred and assigned to the Servicer
and all benefits and burdens of ownership thereof, including the right to
accrued interest thereon from the date of purchase and the risk of default
thereon, shall pass to the Servicer. The Servicer shall promptly deliver to
the Trustee a certification of a Servicing Officer to the effect that all
requirements of this paragraph have been satisfied with respect to a Mortgage
Loan to be repurchased pursuant to this paragraph.

      The Servicer shall deposit the Purchase Price for any Mortgage Loan
repurchased pursuant to Section 3.12 in the Certificate Account pursuant to
Section 3.06 within one Business Day after the purchase of the Mortgage Loan.
Upon receipt by the Trustee of written notification of any such deposit signed
by a Servicing Officer, the Trustee shall release to the Servicer the related
Mortgage File and shall execute and deliver such instruments of transfer or
assignment, in each case without recourse, as shall be necessary to vest in
the Servicer any Mortgage Loan previously transferred and assigned pursuant
hereto. The Servicer covenants and agrees to indemnify the Trust Fund against
any liability for any "prohibited transaction" taxes and any related interest,
additions, and penalties imposed on the Trust Fund established hereunder as a
result of any modification of a Mortgage Loan effected pursuant to this
Section, or any purchase of a Mortgage Loan by the Servicer in connection with
a modification (but such obligation shall not prevent the Servicer or any
other appropriate Person from contesting any such tax in appropriate
proceedings and shall not prevent the Servicer from withholding payment of
such tax, if permitted by law, pending the outc


 
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