TERMS SHEET This terms sheet contains selected information for quick reference only. You should read this Supplement, particularly "Risk Factors," and each of the other documents listed under "Available Information." Sponsor: Merrill Lynch, Pierce, Fenner & Smith Incorporated Trustee: Wells Fargo Bank, National Association Tax Administrator: The Trustee Closing Date: July 30, 2007 Distribution Dates: For the Group 1, Group 2, Group 4 and Group 5 Securities, the 20th day of  each  month  or  if  the  20th  day  is  not  a  Business  Day,  the  first  Business  Day  thereafter, commencing in August 2007. For the Group 3 Securities, the 16th day of each month or if the 16th day is not a Business Day, the first Business Day thereafter, commencing in August 2007. Trust Assets: Trust Asset Group Trust Asset Type Certificate Rate Original Term To Maturity (in years) 1 Ginnie Mae II 6.5% 30 2 Ginnie Mae II 6.5% 30 3 Ginnie Mae I 5.5% 30 4 Underlying Certificates (1) (1) 5 Underlying Certificates (1) (1) (1)Certain information regarding the Underlying Certificates is set forth in Exhibits A and B to this Supplement. Security  Groups:  This  series  of  Securities  consists  of  multiple  Security  Groups  (each,  a "Group"),  as  shown  on  the  front  cover  of  this  Supplement  and  on  Schedule  I  to  this Supplement. Payments on each Group will be based solely on payments on the Trust Asset Group with the same numerical designation. B-3