AMENDMENT NUMBER ONE Master Mortgage Loan Purchase and Servicing Agreement dated as of February 1, 2005

This AMENDMENT NUMBER ONE is made this 28th day of December, 2005, by and between CitiMortgage, Inc., having an address at 1000 Technology Drive, MS 55, O’Fallon, Missouri 63368 (the “Seller”) and CITIGROUP GLOBAL MARKETS REALTY CORP. having an address at 390 Greenwich Street, New York, New York 10013 (the “Purchaser”), to the Master Mortgage Loan Purchase and Servicing Agreement, dated as of February 1, 2005, by and between the Purchaser and the Seller (the “Agreement”).

WHEREAS, the Purchaser and the Seller desire to amend the Agreement, subject to the terms hereof, to modify the Agreement as specified herein; and

WHEREAS, the Purchaser and the Seller each have agreed to execute and deliver this Amendment Number One on the terms and conditions set forth herein.

NOW THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and of the mutual covenants herein contained, the parties hereto hereby agree as follows:

SECTION 1.    Amendments . Effective as of December 28, 2005, the Agreement is hereby amended as follows:

(a)    Section 1 of the Agreement is hereby amended by adding the following definitions:

Commission : The United States Securities and Exchange Commission.

Depositor : The depositor, as such term is defined in Regulation AB, with respect to any Securitization Transaction.

Exchange Act : The Securities Exchange Act of 1934, as amended.

Qualified Correspondent : Any Person from which the Seller purchased Mortgage Loans, provided that the following conditions are satisfied: (i) such Mortgage Loans were originated pursuant to an agreement between the Seller and such Person that contemplated that such Person would underwrite mortgage loans from time to time, for sale to the Seller, in accordance with underwriting guidelines designated by the Seller (“Designated Guidelines”) or guidelines that do not vary materially from such Designated Guidelines; (ii) such Mortgage Loans were in fact underwritten as described in clause (i) above and were acquired by the Seller within 180 days after origination; (iii) either (x) the Designated Guidelines were, at the time such Mortgage Loans were originated, used by the Seller in origination of mortgage loans of the same type as the Mortgage Loans for the Seller’s own account or (y) the Designated Guidelines were, at the time such Mortgage Loans were underwritten, designated by the Seller on a consistent basis for use by lenders in originating mortgage loans to be purchased by the Seller; and (iv) the Seller employed, at the time such Mortgage Loans were acquired by the Seller, pre-purchase or post-purchase quality assurance procedures (which may involve, among other things, review of a sample of mortgage loans purchased during a particular time period or through particular channels) designed to ensure that Persons from which it purchased mortgage loans properly applied the underwriting criteria designated by the Seller.

Reconstitution : Any Securitization Transaction, Agency Transfer or Whole Loan Transfer.

Reconstitution Agreement : The agreement or agreements entered into by the Seller and the Purchaser and/or certain third parties on the Reconstitution Date or Dates with respect to any or all of the Mortgage Loans serviced hereunder, in connection with a Whole Loan Transfer or a Securitization Transaction as provided in Section 5.06.

Reconstitution Date : The date or dates on which any or all of the Mortgage Loans serviced under this Agreement shall be removed from this Agreement and reconstituted as part of a Whole Loan Transfer or Securitization Transaction pursuant to Section 5.06 hereof.

Regulation AB : Subpart 229.1100 - Asset Backed Securities (Regulation AB), 17 C.F.R. §§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.

REO Disposition : The final sale by the Seller of any REO Property.

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

Securitization Transaction : Any transaction involving either (1) a sale or other transfer of some or all of the Mortgage Loans directly or indirectly to an issuing entity in connection with an issuance of publicly offered or privately placed, rated or unrated mortgage-backed securities or (2) an issuance of publicly offered or privately placed, rated or unrated securities, the payments on which are determined primarily by reference to one or more portfolios of residential mortgage loans consisting, in whole or in part, of some or all of the Mortgage Loans.

Seller/Servicer Information : As defined in Section 17.07(a).

Servicer : As defined in Section 17.03(c).

Servicing Criteria : The “servicing criteria” set forth in Item 1122(d) of Regulation AB, as such may be amended from time to time.

Static Pool Information : Static pool information as described in Item 1105(a)(1)-(3) and 1105(c) of Regulation AB.

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 Regulation AB with respect to Mortgage Loans under the direction or authority of the Seller or a Subservicer.

Subservicing Agreement : Each agreement providing for the servicing of any of the Mortgage Loans by a Subservicer.

Third-Party Originator : Each Person, other than a Qualified Correspondent, that originated Mortgage Loans acquired by the Seller.

(b)    Section 1 of the Agreement is hereby amended by replacing the definition of “Subservicer” therein with the following:

Subservicer : Any Person that services Mortgage Loans on behalf of the Seller or any Subservicer and is responsible for the performance (whether directly or through Subservicers or Subcontractors) of a substantial portion of the material servicing functions required to be performed by the Seller under this Agreement or any Reconstitution Agreement that are identified in Item 1122(d) of Regulation AB.

(c)    The Agreement is hereby amended by replacing the words “Pass-Through Transfer” each time they appear in the Agreement with the words “Securitization Transaction”.

(d)    Section 5.06 is hereby amended by replacing the words “reconstitution agreement with “Reconstitution Agreement” and the words “reconstitution agreements” with the words “Reconstitution Agreements” each time they appear in such Section.

(e)    Section 5.06(b)(iv) is hereby amended by adding the following words immediately after the words “Exhibit N”:

 “or Exhibit O, as directed by the Purchaser;”

(f)    Section 11.03 of the Agreement is hereby amended by deleting the third sentence of such Section in its entirety and replacing it with the following:

“Seller's obligation to make such Monthly Advances as to any Mortgage Loan will continue through the last Monthly Payment due prior to the payment in full of the Mortgage Loan, or through the last Remittance Date prior to the Remittance Date for the distribution of all other payments or recoveries (including proceeds under any title, hazard or other insurance policy, or condemnation awards) with respect to the Mortgage Loan, or through REO Disposition, provided, however, that such obligation shall cease if (a) there has been a final disposition of the Mortgage Loan or (b) if Seller, in its good faith judgment, determines that such advances would not be recoverable from late payments with respect to such Mortgage Loan or Liquidation Proceeds, Insurance Proceeds or REO Disposition Proceeds received in connection with the related Mortgaged Property.”

(g)    The following shall be added as Section 11.04 of the Agreement:

“Section 11.04 Servicing Released Provisions .

Notwithstanding anything to the contrary set forth in this Agreement, any Mortgage Loan purchased by the Purchaser and not boarded on the Seller’s servicing system as of the related Closing Date (the “Subject Mortgage Loans”) shall be serviced by the Seller in accordance with the terms of this Agreement, provided that the Seller shall not be obligated to (i) make Monthly Advances pursuant to Section 10.09(c) and Section 11.03 of this Agreement or (ii) make payments in respect of compensating interest pursuant to Section 10.09(i) of this Agreement until the Remittance Date in the month in which the related Mortgage Loans are boarded on the Seller’s servicing system, which shall occur no later than two months following the related Closing Date unless otherwise mutually agreed to by the Purchaser and the Seller. In the event that the Mortgage Loans are transferred by the Purchaser in connection with a Securitization Transaction prior to such date, the Purchaser shall be responsible for making any Monthly Advances and compensating interest payments required pursuant to the transaction documents for such Securitization Transaction.”

(h)    The first paragraph of Section 11.02 of the Agreement is hereby amended by deleting such paragraph in it entirety and replacing it with the following:

“On or before the fifth (5 ^th ) Business Day of each month, Seller shall provide the Purchaser an electronically transmitted file containing the data set forth in Exhibit K or, with respect to the Subject Mortgage Loans, containing the data set forth in Exhibit Q.”

(i)    Section 15.01 of the Agreement is hereby amended by adding the word “or” immediately after clause (g) of such Section and adding the following as clause (h):

“(h)   the Seller fails to duly perform, within the required time period, its obligations under Sections 12.04 or 12.05, which failure continues unremedied for a period of ten (10) days after the date on which written notice of such failure, requiring the same to be remedied, shall have been given to the Seller by any party to this Agreement or by any master servicer responsible for master servicing the Mortgage Loans pursuant to a Securitization Transaction;“

(j)    The following shall be added as Section 17 of the Agreement:

Section 17.01.    Intent of the Parties; Reasonableness .

The Purchaser and the Seller acknowledge and agree that the purpose of Article 17 of this Agreement is to facilitate compliance by the Purchaser and any Depositor with the provisions of Regulation AB and related rules and regulations of the Commission. Although Regulation AB is applicable by its terms only to offerings of asset-backed securities that are registered under the Securities Act, the Seller acknowledges that investors in privately offered securities may require that the Purchaser or any Depositor provide comparable disclosure in unregistered offerings. References in this Agreement to compliance with Regulation AB include provision of comparable disclosure in private offerings.

Neither the Purchaser nor any Depositor shall exercise its right to request delivery of information or other performance under these provisions other than in good faith, or for purposes other than compliance with the Securities Act, the Exchange Act and the rules and regulations of the Commission thereunder (or the provision in a private offering of disclosure comparable to that required under the Securities Act). The Seller acknowledges that interpretations of the requirements of Regulation AB may change over time, whether due to interpretive guidance provided by the Commission or its staff, consensus among participants in the asset-backed securities markets, advice of counsel, or otherwise, and agrees to comply with requests made by the Purchaser or any Depositor in good faith for delivery of information under these provisions on the basis of evolving interpretations of Regulation AB. In connection with any Securitization Transaction, the Seller shall cooperate fully with the Purchaser to deliver to the Purchaser (including any of its assignees or designees) and any Depositor, any and all statements, reports, certifications, records and any other information necessary in the good faith determination of the Purchaser or any Depositor to permit the Purchaser or such Depositor to comply with the provisions of Regulation AB, together with such disclosures relating to the Seller, any Subservicer, any Third-Party Originator and the Mortgage Loans, or the servicing of the Mortgage Loans, reasonably believed by the Purchaser or any Depositor to be necessary in order to effect such compliance.

The Purchaser (including any of its assignees or designees) shall cooperate with the Seller by providing timely notice of requests for information under these provisions and by reasonably limiting such requests to information required, in the Purchaser’s reasonable judgment, to comply with Regulation AB.

Section 17.02.    Additional Representations and Warranties of the Seller .

(a)    The Seller shall be deemed to represent to the Purchaser and to any Depositor, as of the date on which information is first provided to the Purchaser or any Depositor under Section 17.03 that, except as disclosed in writing to the Purchaser or such Depositor prior to such date: (i) the Seller is not aware and has not received notice that any default, early amortization or other performance triggering event has occurred as to any other securitization due to any act or failure to act of the Seller; (ii) the Seller has not been terminated as servicer in a residential mortgage loan securitization, either due to a servicing default or to application of a servicing performance test or trigger; (iii) no material noncompliance with the applicable servicing criteria with respect to other securitizations of residential mortgage loans involving the Seller as servicer has been disclosed or reported by the Seller; (iv) no material changes to the Seller’s policies or procedures with respect to the servicing function it will perform under this Agreement and any Reconstitution Agreement for mortgage loans of a type similar to the Mortgage Loans have occurred during the three-year period immediately preceding the related Securitization Transaction; (v) there are no aspects of the Seller’s financial condition that could have a material adverse effect on the performance by the Seller of its servicing obligations under this Agreement or any Reconstitution Agreement; (vi) there are no material legal or governmental proceedings pending (or known to be contemplated) against the Seller, any Subservicer or any Third-Party Originator; and (vii) there are no affiliations, relationships or transactions relating to the Seller, any Subservicer or any Third-Party Originator with respect to any Securitization Transaction and any party thereto identified by the related Depositor of a type described in Item 1119 of Regulation AB.

(b)    If so requested by the Purchaser or any Depositor on any date following the date on which information is first provided to the Purchaser or any Depositor under Section 17.03, the Seller shall, within five Business Days following such request, confirm in writing the accuracy of the representations and warranties set forth in paragraph (a) of this Section or, if any such representation and warranty is not accurate as of the date of such request, provide reasonably adequate disclosure of the pertinent facts, in writing, to the requesting party.

Section 17.03.    Information to Be Provided by the Seller .

In connection with any Securitization Transaction the Seller shall (i) within five Business Days following request by the Purchaser or any Depositor, provide to the Purchaser and such Depositor (or, as applicable, cause each Third-Party Originator and each Subservicer to provide), in writing and in form and substance reasonably satisfactory to the Purchaser and such Depositor, the information and materials specified in paragraphs (a), (b), (c) and (f) of this Section, and (ii) as promptly as practicable following notice to or discovery by the Seller, provide to the Purchaser and any Depositor (in writing and in form and substance reasonably satisfactory to the Purchaser and such Depositor) the information specified in paragraph (d) of this Section.

(a)    If so requested by the Purchaser or any Depositor, the Seller shall provide such information regarding (i) the Seller, as originator of the Mortgage Loans (including as an acquirer of Mortgage Loans from a Qualified Correspondent), or (ii) each Third-Party Originator, and (iii) as applicable, each Subservicer, as is requested for the purpose of compliance with Items 1103(a)(1), 1105, 1110, 1117 and 1119 of Regulation AB. Such information shall include, at a minimum:

(A)   the originator’s form of organization;

(B)   a description of the originator’s origination program and how long the originator has been engaged in originating residential mortgage loans, which description shall include a discussion of the originator’s experience in originating mortgage loans of a similar type as the Mortgage Loans; information regarding the size and composition of the originator’s origination portfolio; and information that may be material, in the good faith judgment of the Purchaser or any Depositor, to an analysis of the performance of the Mortgage Loans, including the originators’ credit-granting or underwriting criteria for mortgage loans of similar type(s) as the Mortgage Loans and such other information as the Purchaser or any Depositor may reasonably request for the purpose of compliance with Item 1110(b)(2) of Regulation AB;

(C)   a description of any material legal or governmental proceedings pending (or known to be contemplated) against the Seller, each Third-Party Originator and each Subservicer; and

(D)   a description of any affiliation or relationship between the Seller, each Third-Party Originator, each Subservicer and any of the following parties to a Securitization Transaction, as such parties are identified to the Seller by the Purchaser or any Depositor in writing in advance of such Securitization Transaction:

(1)   the sponsor;

(2)   the depositor;

(3)   the issuing entity;

(4)   any servicer;

(5)   any trustee;

(6)   any originator;

(7)   any significant obligor;

(8)   any enhancement or support provider; and

(9)   any other material transaction party.

(b)    If so requested by the Purchaser or any Depositor, the Seller shall provide (or, as applicable, cause each Third-Party Originator to provide) Static Pool Information with respect to the mortgage loans (of a similar type as the Mortgage Loans, as reasonably identified by the Purchaser as provided below) originated by (i) the Seller, if the Seller is an originator of Mortgage Loans (including as an acquirer of Mortgage Loans from a Qualified Correspondent), and/or (ii) each Third-Party Originator. Such Static Pool Information shall be prepared by the Seller (or Third-Party Originator) on the basis of its reasonable, good faith interpretation of the requirements of Item 1105(a)(1)-(3) of Regulation AB. To the extent that there is reasonably available to the Seller (or Third-Party Originator) Static Pool Information with respect to more than one mortgage loan type, the Purchaser or any Depositor shall be entitled to specify whether some or all of such information shall be provided pursuant to this paragraph. The content of such Static Pool Information may be in the form customarily provided by the Seller, and need not be customized for the Purchaser or any Depositor. Such Information for each vintage origination year or prior securitized pool, as applicable, shall be presented in increments no less frequently than quarterly over the life of the mortgage loans included in the vintage origination year or prior securitized pool. The most recent periodic increment must be as of a date no later than 135 days prior to the date of the prospectus or other offering document in which the Static Pool Information is to be included or incorporated by reference. The Static Pool Information shall be provided in an electronic format that provides a permanent record of the information provided, such as a portable document format (pdf) file, or other such electronic format reasonably required by the Purchaser or the Depositor, as applicable.

Promptly following notice or discovery of a material error in Static Pool Information provided pursuant to the immediately preceding paragraph (including an omission to include therein information required to be provided pursuant to such paragraph), the Seller shall provide corrected Static Pool Information to the Purchaser or any Depositor, as applicable, in the same format in which Static Pool Information was previously provided to such party by the Seller.

If so requested by the Purchaser or any Depositor, the Seller shall provide (or, as applicable, cause each Third-Party Originator to provide), at the expense of the requesting party (to the extent of any additional incremental expense associated with delivery pursuant to this Agreement), such agreed-upon procedures letters of certified public accountants reasonably acceptable to the Purchaser or Depositor, as applicable, pertaining to Static Pool Information relating to prior securitized pools for securitizations closed on or after January 1, 2006 or, in the case of Static Pool Information with respect to the Seller’s or Third-Party Originator’s originations or purchases, to calendar months commencing January 1, 2006, as the Purchaser or such Depositor shall reasonably request. Such letters shall be addressed to and be for the benefit of such parties as the Purchaser or such Depositor shall designate, which may include, by way of example, any Sponsor, any Depositor and any broker dealer acting as underwriter, placement agent or initial purchaser with respect to a Securitization Transaction. Any such statement or letter may take the form of a standard, generally applicable document accompanied by a reliance letter authorizing reliance by the addressees designated by the Purchaser or such Depositor.

(c)    If so requested by the Purchaser or any Depositor, the Seller shall provide such information regarding the Seller, as servicer of the Mortgage Loans, and each Subservicer (each of the Seller and each Subservicer, for purposes of this paragraph, a “Servicer”), as is requested for the purpose of compliance with Item 1108 of Regulation AB. Such information shall include, at a minimum:

(A)   the Servicer’s form of organization;

(B)   a description of how long the Servicer has been servicing residential mortgage loans; a general discussion of the Servicer’s experience in servicing assets of any type as well as a more detailed discussion of the Servicer’s experience in, and procedures for, the servicing function it will perform under this Agreement and any Reconstitution Agreements; information regarding the size, composition and growth of the Servicer’s portfolio of residential mortgage loans of a type similar to the Mortgage Loans and information on factors related to the Servicer that may be material, in the good faith judgment of the Purchaser or any Depositor, to any analysis of the servicing of the Mortgage Loans or the related asset-backed securities, as applicable, including, without limitation:

(1)   whether any prior securitizations of mortgage loans of a type similar to the Mortgage Loans involving the Servicer have defaulted or experienced an early amortization or other performance triggering event because of servicing during the three-year period immediately preceding the related Securitization