Dear All:
Last time, I send this message to this mail list and want to get some advice. I 
still do not solve the problem. Here I would like describe this problem in 
detail and hope someone may give me some advice and help me solve this problem.

Basically, I use SCX-HPLC/MS to separate the SILAC sample, which is labeled 
with isotope. I did off-line SCX-HPLC/MS and collected 30 fractions for the 
LC/MS. The mass spectrometry is the new version from Thermo and called Velo. 
After the sequest search with database, the results are very big file. All the 
30 fractions search files are almost 14G even after I zipped them. That means 
each fraction is almost 1G. I tried to analyze one fraction with TPP software 
and it works. When I load 5 or more fractions, TPP will not work anymore.

Does anyone have any advice how to analyze such big file size data with TPP? Is 
there any other way to help me to analyze all the data. The major things that I 
need combine all the fraction and get protein ASAP ratio.

Thank you for your kind help

Eileen

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Eileen Yue
Sent: 04 March 2010 16:44
To: [email protected]
Subject: [spctools-discuss] problem to analyze the VELO data with TPP

Dear All:
I tried to use TPP to analyze the SILAC data produced from Velo under Xcaliber 
2.1. The sequest results for each fraction is very big and I have total 30 
fraction. I tried ONE fraction with TPP and it is fine to convert the raw data 
into mzxml and sequest results to pepxml. When I try to analyze more fraction 
together such as only 5 fraction, TPP does not work. Can anyone tell me how to 
analyze my data and any advice for this situation?

Thank you so much for your help
Eileen

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