MORTGAGE LOAN PURCHASE AGREEMENT
This Mortgage Loan Purchase Agreement (the "Agreement"), dated
as
of October 27, 2006, is between Wells Fargo Asset Securities
Corporation, a
Delaware corporation (the "Company"), and Wells Fargo Bank, N.A., a
national
banking association (the "Seller" or "Wells Fargo Bank").
The Company and the Seller hereby recite and agree as follows:
1. Defined Terms. Terms used without definition herein shall
have
the respective meanings assigned to them in the Pooling and
Servicing Agreement,
dated as of October 27, 2006 (the "Pooling and Servicing
Agreement"), among the
Company, Wells Fargo Bank, as master servicer (the "Master
Servicer"), and HSBC
Bank USA, National Association, as trustee (the "Trustee"),
relating to the
issuance of the Company's Mortgage Pass-Through Certificates,
Series 2006-17
(the "Certificates") or, if not defined therein, in the
underwriting agreement,
dated February 15, 2006 and terms agreement, dated September 15,
2006 (together,
the "Underwriting Agreement"), among the Company, Wells Fargo Bank
and UBS
Securities LLC or in the purchase agreement, dated May 10, 2004 and
the
purchaser terms agreement, dated October 11, 2006 (together, the
"Purchase
Agreement"), among the Company, Wells Fargo Bank and UBS Securities
LLC.
2. Assignment of Servicing Agreements. The Seller agrees to
sell,
and the Company agrees to purchase, the mortgage loans (the
"Mortgage Loans"),
other than the Fixed Retained Yield with respect to the Mortgage
Loans, listed
on the Mortgage Loan Schedule and all of the Seller's interest with
respect to
the Mortgage Loans as the owner in, to and under each Servicing
Agreement.
3. Purchase Price; Purchase and Sale. The purchase price (the
"Purchase Price") for the Mortgage Loans shall consist of $[__]
payable by the
Company to the Seller on the Closing Date in immediately available
funds.
Upon payment of the Purchase Price, the Seller shall be deemed
to
have transferred, assigned, set over and otherwise conveyed to the
Company all
the right, title and interest of the Seller in and to the Mortgage
Loans
including all interest and principal received or receivable by the
Seller on or
with respect to the Mortgage Loans after the Cut-Off Date (and
including
scheduled payments of principal and interest due after the Cut-Off
Date but
received by the Seller on or before the Cut-Off Date and Principal
Prepayments
received or applied on the Cut-Off Date, but not including payments
of principal
and interest due on the Mortgage Loans on or before the Cut-Off
Date), together
with all of the Seller's right, title and interest in and to the
proceeds of any
related title, hazard, primary mortgage or other insurance
policies, the
Seller's right to receive amounts, if any, payable on behalf of any
Mortgagor
from the Subsidy Account relating to any Subsidy Loan, all of the
Seller's
rights described in Section 2 above, and all other property and
rights described
in the first paragraph of Section 2.01(a) of the Pooling and
Servicing
Agreement. The Company hereby directs the Seller, and the Seller
hereby agrees,
to deliver to the Trustee or Custodian on behalf of the Trustee,
all documents,
instruments and agreements required to be delivered by the Company
to the
Trustee under the Pooling and Servicing Agreement; including,
without
limitation, the documents required to be delivered under Section
2.01(a) of the
Pooling and Servicing Agreement; and upon the occurrence of a
Document Transfer
Event, the documents required to be delivered under Section
2.01(b). The Seller
further agrees to deliver such other documents, instruments and
agreements as
the Company or the Trustee shall reasonably request.
4. Representations and Warranties; Covenants. The Seller hereby
represents and warrants to the Company that (i) the Company's
representations
and warranties to the Trustee pursuant to Section 2.03(b) of the
Pooling and
Servicing Agreement are true and correct, as of the date thereof,
and (ii)
Seller has not dealt with any broker, investment banker, agent or
other person
(other than the Company and UBS Securities LLC) who may be entitled
to any
commission or compensation in connection with the sale of the
Mortgage Loans.
The Seller hereby agrees to cure any breach of such representations
and
warranties in accordance with the terms of the Pooling and
Servicing Agreement.
The Seller hereby agrees to continue to pay on behalf of the
Company and its successors and assignees, promptly as they become
due, any
lender-paid primary mortgage insurance premiums ("LPMI Premiums")
with respect
to any lender-paid primary mortgage insurance policy (an "LPMI
Policy") on each
Mortgage Loan so insured as of the Cut-Off Date, until such
Mortgage Loan has
been paid in full or otherwise liquidated; provided, however, that
the foregoing
obligation of the Seller shall terminate with respect to all such
Mortgage Loans
in the event that either (i) another entity acceptable to the
insurers of such
LPMI Policies (the "LPMI Insurers") and the rating agencies rating
the
Certificates undertakes to pay such LPMI Premiums, or (ii) the
Seller pays
one-time premiums to such LPMI Insurers such
