On Fri, Sep 3, 2010 at 2:51 PM, Jagan Kommineni
<[email protected]>wrote:

> Dear All,
>
> I have taken RAW file generated by Instrument info: Manufacturer: Thermo
> Finnigan, Model: LCQ Deca, Ionization: nanoelectrospray, Analyzer:
> quadrupole ion trap, Detector: electron multiplier and run standard search
> using Mascot, X!tandem and OMSSA and fed the data through TPP pipeline then
> I found that 0 (zero) decoy and 130 non-decoy entries for the search
> results of OMSSA whereas 545 Decoys and 785 Non-Decoys entries for Mascot
> search results and 536 Decoys and 833 Non-Decoys entries for x!tandem
> search.
>
> I found total hits retruned from Mascot and X!tandem search result sets
> respectively are of 303 and 351.
>
>
> For OMSSA based search results, the PeptideProphetParser program quitted
> with exit code of 11.
>
> Here is the complete STDOUT of OMSSA and TPP pipeleine ...
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> /home/APCF/tpp/bin/xinteract -Njagan-J1370.pepprophet.xml -eT -d'sp|decoy'
> -p0.05 -l7 -x20 -R -OP jagan-J1370.pep.xml
>
> /home/APCF/tpp/bin/xinteract (TPP v4.4 JETSTREAM (unstable development
> prerelease) rev 0, Build 201007011135 (linux))
>
> running: "/mnt/sanfs/APCF/APCF_WEB/tpp/bin/InteractParser
> 'jagan-J1370.pepprophet.xml' 'jagan-J1370.pep.xml' -P -L'7' -E'trypsin'"
>  file 1: jagan-J1370.pep.xml
>  processed altogether 130 results
>
>
>  results written to file
> /mnt/sanfs/APCF/results/tpp/2010-09-03/jagan-J1370.pepprophet.shtml
>
>
>
> command completed in 0 sec
>
> running: "/mnt/sanfs/APCF/APCF_WEB/tpp/bin/PeptideProphetParser
> 'jagan-J1370.pepprophet.xml' DECOY='sp|decoy' MINPROB=0.05 EXTRAITRS=20
> NONPARAM"
> Using Decoy Label "sp|decoy".
> Using non-parametric distributions
>  (OMSSA)
> WARNING!! The discriminant function for OMSSA is not yet complete.  It is
> presented here to help facilitate trial and discussion.  Reliance on this
> code for publishable scientific results is not recommended.
> init with OMSSA trypsin
> MS Instrument info: Manufacturer: UNKNOWN, Model: UNKNOWN, Ionization:
> UNKNOWN, Analyzer: UNKNOWN, Detector: UNKNOWN
>
>  PeptideProphet  (TPP v4.4 JETSTREAM (unstable development prerelease) rev
> 0, Build 201007011135 (linux)) akel...@isb
>  read in 0 1+, 99 2+, 31 3+, 0 4+, 0 5+, 0 6+, and 0 7+ spectra.
> Initialising statistical models ...
> Found 0 Decoys, and 130 Non-Decoys
> WARNING: No decoys with label sp|decoy were found in this dataset.
> reverting to fully unsupervised method.
> Iterations: .........10.........20
>
> command "/mnt/sanfs/APCF/APCF_WEB/tpp/bin/PeptideProphetParser
> 'jagan-J1370.pepprophet.xml' DECOY='sp|decoy' MINPROB=0.05 EXTRAITRS=20
> NONPARAM" exited with non-zero exit code: 11
> QUIT - the job is incomplete
>
> ==============================================================================================
>
> I wonder is there any requirement to have at least few decoy entries for
> PeptideProphetParser to continue without fail?
>
> Further study with pep XML generated by different algorithm search results,
> I found that there is only one decoy entry for xml tag of search_hit which I
> am here with enclosing in this mail ...
>
> ------------------------------------------------------------
> <search_hit hit_rank="2" peptide="LGDSEVDIGIMANLDIVESKR"
> peptide_prev_aa="K" peptide_next_aa="L" protein="520685"
> num_tot_proteins="2" num_matched_ions="21" tot_num_ions="40"
> calc_neutral_pep_mass="2273.156" massdiff="0.041999999999865"
> is_rejected="0" protein_descr="sp|decoy_C1ERL6|ACDH_BACC3 Reverse sequence,
> was Acetaldehyde dehydrogenase OS=Bacillus cereus (strain 03BB102)
> GN=BCA_2154 PE=3 SV=1">
>           <alternative_protein protein="520683"
> protein_descr="sp|decoy_A0RD69|ACDH_BACAH Reverse sequence, was Acetaldehyde
> dehydrogenase OS=Bacillus thuringiensis (strain Al Hakam) GN=BALH_1843 PE=3
> SV=1"/>
>           <search_score name="pvalue" value="0.000012588862528"/>
>           <search_score name="expect" value="0.648238298133515"/>
>         </search_hit>
> -----------------------------------------------------------
>
> whereas I found 581 and 572 similar tags in Mascot and X!tandem based
> results,
>
> with regards,
>
> --
> Dr. Jagan Kommineni
> Ludwig Institute for Cancer research
> Pakville VIC 3145
> Australia.
>
>


-- 
Dr. Jagan Kommineni
Ludwig Institute for Cancer research
Pakville VIC 3145
Australia.

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