0001162318-07-000834 Sample Contracts

SERVICER APPOINTMENT, ASSUMPTION AND AMENDMENT AGREEMENT (SERVICING CONTRACT)
Servicing Contract • November 7th, 2007 • Deutsche Alt-B Securities Mortgage Loan Trust, Series 2007-Ab1 • Asset-backed securities • New York

THIS SERVICER APPOINTMENT, ASSUMPTION AND AMENDMENT AGREEMENT (SERVICING CONTRACT) (this “Agreement”), dated as of November 1, 2007, is by and among Deutsche Alt-A Securities, Inc., as depositor (the “Depositor”), DB Structured Products, Inc., as sponsor (the “Sponsor”), MidFirst Bank, as a servicer (“MidFirst”), Wells Fargo Bank, National Association, as master servicer (the “Master Servicer”) and securities administrator (the “Securities Administrator”), and HSBC Bank USA, National Association, as trustee (the “Trustee”), and is acknowledged and agreed to by GMAC Mortgage, LLC (“GMACM”).