Actually it failed because it wasn't run in Semiparametric mode.  Check the
box next to use nonparametric models and try again.
On Mar 27, 2014 7:27 AM, "Jimmy Eng" <[email protected]> wrote:

> I believe that PeptideProphet failed because you told it to use a decoy
> tag that it could not find in any of the search results.  Apparently the
> decoy tag in MSGF+ is always "XXX_" and can't be changed.  So you must set
> that as the decoy tag and make sure that same decoy tag is used in
> MyriMatch.
>
> Another option is to use a self generated target-decoy database and turn
> off the auto-decoy option in the search engines.
>
>
> On Thu, Mar 27, 2014 at 2:29 AM, <[email protected]> wrote:
>
>> Hi,
>>     I try to combine two different search engine results using iProphet.
>> One is myrimatch, the other is MSGF+.
>>     The decoy database search is auto conducted by each search engine.
>>     But iProphet failed, exactly PeptideProphetParser failed, when I
>> select "Analysis Pipeline (Tandem)" -> "Analyze Peptides" in TPP 4.6.3
>> to combine them.
>>     The parameters for PeptideProphet and InterProphet are showed below.
>>
>>
>> <https://lh6.googleusercontent.com/-aIAyfalUSIo/UzPtqmRkHoI/AAAAAAAAAAM/RcNaJf-gpcU/s1600/QQ%E5%9B%BE%E7%89%8720140327172121.jpg>
>>
>>
>> <https://lh5.googleusercontent.com/-rfMJq_uvl4c/UzPt7QykkQI/AAAAAAAAAAU/DGzmgdsYqhQ/s1600/QQ%E5%9B%BE%E7%89%8720140327172230.jpg>
>>
>>     Here is the log.
>>
>>     running: "C:/Inetpub/tpp-bin/PeptideProphetParser "interact.pep.xml"
>> MINPROB=0.01 DECOY=###REV###"
>>
>> Using Decoy Label "###REV###".
>>  (MS-GF+)
>> WARNING!! The discriminant function for MSGFPL 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.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> WARNING: MSGFPL only support semi-parametric PeptideProphet modelling, which 
>> relies on a DECOY search.
>> init with MS-GF+ trypsin
>> two different search engines specified: MS-GF+ and MyriMatch
>>
>> command "C:/Inetpub/tpp-bin/PeptideProphetParser "interact.pep.xml" 
>> MINPROB=0.01 DECOY=###REV###" failed: Operation not permitted
>>
>> command "C:/Inetpub/tpp-bin/PeptideProphetParser "interact.pep.xml" 
>> MINPROB=0.01 DECOY=###REV###" exited with non-zero exit code: 1
>> QUIT - the job is incomplete
>>
>>
>>     Can any body tell me why this happen? Why the PeptideProphetParser
>> failed?
>>
>>     By the way, it didn't print error information when I try the command
>> manually.
>>     Thanks very much!
>>
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