Re: [spctools-discuss] Re: Question About iprophet/Spectral library

2016-09-20 Thread Ali
Thanks David! On Tuesday, September 20, 2016 at 10:52:12 PM UTC-4, David Shteynberg wrote: > > You don't need to run ProteinProphet to create a library. Run SpectraST > to create a consensus library, it will use all spectra matching a given > peptide and passing your threshold to create on cons

Re: [spctools-discuss] Re: Question About iprophet/Spectral library

2016-09-20 Thread David Shteynberg
You don't need to run ProteinProphet to create a library. Run SpectraST to create a consensus library, it will use all spectra matching a given peptide and passing your threshold to create on consensus library spectrum for that peptide. The SpectraST wiki page has all the details: http://tools.p

Re: [spctools-discuss] Re: Question About iprophet/Spectral library

2016-09-20 Thread Ali
Thanks David very helpful! Everything is much more clear now. So now I just have one more question: My ultimate goal is to create a spectral library from all these results. If I understood correctly, I should now take the pep.xml file processed with iprophet (which contains similar peptides of

Re: [spctools-discuss] Re: Question About iprophet/Spectral library

2016-09-20 Thread David Shteynberg
Ali, iProphet will compute a probability of each unique spectrum separately. It only combines PSM if they represent repeated searches of the same spectrum. For example, if the spectrum was searched multiple times with different searches. If you want the probability of a particular peptide you m

[spctools-discuss] Re: Question About iprophet/Spectral library

2016-09-20 Thread Ali
Sorry I made a mistake here! I am getting similar *peptides*! Not *spectra*! On Monday, September 19, 2016 at 3:26:20 PM UTC-4, Ali wrote: > > Hello > > I am combining multiple search results (all from X!Tandem) using iprophet > to then make a spectral library of them with SpectraST. I have some