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: Citigroup Global Markets Inc.
Trustee: U.S. Bank National Association
Tax Administrator: The Trustee
Closing Date: August 30, 2007
Distribution Dates: For the Group 1, Group 3 and Group 4 Securities, the 20th day of each
month or if the 20th day is not a Business Day, the first Business Day thereafter, commencing in
September 2007. For the Group 2 Securities, the 16th day of each month or if the 16th day is not
a Business Day, the first Business Day thereafter, commencing in September 2007.
Trust Assets:
Trust
Asset
Group
Trust Asset Type
Certificate Rate
Original Term
To Maturity
(in years)
1
Ginnie Mae II
6.0%
30
2
Underlying Certificates
(1)
(1)
3
Underlying Certificate
(1)
(1)
4
Underlying Certificates
(1)
(1)
(1)Certain information regarding the Underlying Certificates is set forth in
Exhibits A and B to this Supplement, except in the case of Ginnie Mae
2007-049 Classes BA and QA for which this Supplement is the Underlying
Certificates Disclosure Document.
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.
Assumed Characteristics of the Mortgage Loans Underlying the Group 1 Trust Assets1:
Principal
Balance2
Weighted Average
Remaining Term to
Maturity (in months)
Weighted Average
Loan Age
(in months)
Weighted
Average
Mortgage Rate3
$384,754,226
357
2
6.39%
1As of August 1, 2007.
2Does not include the Group 1 Trust Assets that will be added to pay the
Trustee Fee.
3The Mortgage Loans underlying the Group 1 Trust Assets may bear interest
at rates ranging from 0.25% to 1.50% per annum above the related Certifi-
cate Rate.
The actual remaining terms to maturity, loan ages and Mortgage Rates of many of the Mortgage
Loans underlying the Group 1 Trust Assets will differ from the weighted averages shown above,
perhaps significantly. See "The Trust Assets – The Mortgage Loans" in this Supplement. See
B-12