|LEHMAN XS TRUST Mortgage
      Pass-Through Certificates, Series 2005-1                                  |  |              |  |              
|-------------------------------------------------------------------------------------------------------- |  | ------------ |  | -------------
|Schedule of Year-To-Date
      Principal and Interest Distributions to Certificateholders for
      2005 |  |             
|Class                                                                                                    |  | Interest     |  | Principal    
|                                                                                                         |  | Distribution |  | Paid         
|IA1                                                                                                      |  | 1,001,080.67 |  | 87,000,000.00
|IA2                                                                                                      |  | 3,577,367.36 |  | 1,300,655.80 
|IA3                                                                                                      |  | 1,046,397.33 |  | 0.00         
|IA4                                                                                                      |  | 649,100.01   |  | 9,811,246.37 
|IAX                                                                                                      |  | 2,982,440.61 |  | 0.00         
|IIA1                                                                                                     |  | 4,293,776.50 |  | 37,082,195.40
|IIA2                                                                                                     |  | 485,047.25   |  | 4,188,996.85 
|IIIA1                                                                                                    |  | 1,593,566.68 |  | 26,652,032.69
|IIIA2A                                                                                                   |  | 1,306,125.00 |  | 0.00         
|IIIA2B                                                                                                   |  | 193,344.00   |  | 0.00         
|IIIA3A                                                                                                   |  | 847,646.82   |  | 0.00         
|IIIA3B                                                                                                   |  | 265,500.00   |  | 0.00         
|IIIA4                                                                                                    |  | 561,730.14   |  | 0.00         
|IIIAIO                                                                                                   |  | 362,708.33   |  | 0.00         
|IIIM1                                                                                                    |  | 156,587.22   |  | 0.00         
|IIIM2                                                                                                    |  | 94,692.00    |  | 0.00         
|IIIM3                                                                                                    |  | 63,583.50    |  | 0.00         
|IIIP                                                                                                     |  | 23,935.45    |  | 0.00         
|IIIX                                                                                                     |  | 919,254.40   |  | 0.00         
|M1                                                                                                       |  | 758,768.51   |  | 0.00         
|M2                                                                                                       |  | 255,351.77   |  | 0.00         
|M3                                                                                                       |  | 223,722.58   |  | 0.00         
|M4                                                                                                       |  | 82,857.31    |  | 0.00         
|P                                                                                                        |  | 323,840.02   |  | 0.00         
|X                                                                                                        |  | 2,882,207.47 |  | 0.00         

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