NAAC Alternative Loan Trust, Series 2004-Ar4 Sample Contracts

EXHIBIT 4.1

Pooling and Servicing Agreement • January 10th, 2005 • NAAC Alternative Loan Trust, Series 2004-Ar4 • Asset-backed securities • New York

• Contract Type
  Pooling and Servicing Agreement
• Filed
  January 10th, 2005
• Company
  NAAC Alternative Loan Trust, Series 2004-Ar4
• Industry
  Asset-backed securities
• Jurisdiction
  New York

SERVICER APPOINTMENT, ASSUMPTION AND AMENDMENT AGREEMENT

Servicer Appointment, Assumption And • August 1st, 2005 • NAAC Alternative Loan Trust, Series 2004-Ar4 • Asset-backed securities • New York

• Contract Type
  Servicer Appointment, Assumption And
• Filed
  August 1st, 2005
• Company
  NAAC Alternative Loan Trust, Series 2004-Ar4
• Industry
  Asset-backed securities
• Jurisdiction
  New York

THIS SERVICER APPOINTMENT, ASSUMPTION AND AMENDMENT AGREEMENT (this “Agreement”), dated as of May 1, 2005, is by and among Wells Fargo Bank, National Association (“Wells Fargo”), Nomura Asset Acceptance Corporation, as depositor (the “Depositor”), Nomura Credit & Capital, Inc., as seller (the “Seller”), and JPMorgan Chase Bank, N.A. (formerly known as JPMorgan Chase Bank), as trustee (the “Trustee”) and custodian (the “Custodian”).