Hey Jason,

If you are able to compress the dataset directory and share it I would be 
happy to troubleshoot this particular issue.

Cheers!
-David

On Thursday, August 31, 2023 at 12:52:42 PM UTC-7 jwi...@gmail.com wrote:

> I am trying to process my data using StPeter and am getting the following 
> error:
>
> Extracting peak intensities from 1 spectral files:
>   1 of 1: C:\TPP\data\Supernatant\PG_SS_RAW\SS1_Slot2-4_1_789.mzML   
>  0%ERROR: Could not read spectra.
>
> The data was collected on a Bruker timsTOF and converted using the 
> msconvert options "combine ion mobility scans" as well as vendor peak 
> picking and scan summing.
>
> I searched the mzML with Comet, then processed those results with 
> PeptideProphet, iProphet, and ProteinProphet. I am using TPP v6.3.3 Arcus, 
> Build 202308242222-9003 (Windows_NT-x86_64). Before it crashes, StPeter 
> appears to be working:
>
> ****** BEGIN StPeter ANALYSIS ******
>  Time at start of analysis: Thu Aug 31 15:39:02 2023
>
>  Parameters:
>   degenerate peptides = yes
>   fdr = 0.01
>   minimum probability = 0
>   sample load = 0
>   tolerance = 0.4
>
>  Reading protXML: .\ss1_slot2-4_1_789.iproph.prot.xml
>   Probability at 0.01 FDR: 0.965
>   Number of proteins above FDR cutoff: 418
>   Number of quantifiable proteins above FDR cutoff: 418
>   Number of peptides for proteins: 822
>   Extracting true protein lengths for zero length proteins. Database: 
> uniref_taxonomy_allcombined_DECOY.fasta
>   Number of proteins fitting criteria for StPeter analysis: 418****** 
> BEGIN StPeter ANALYSIS ******
>  Time at start of analysis: Thu Aug 31 15:39:02 2023
>
>  Parameters:
>   degenerate peptides = yes
>   fdr = 0.01
>   minimum probability = 0
>   sample load = 0
>   tolerance = 0.4
>
>  Reading protXML: .\ss1_slot2-4_1_789.iproph.prot.xml
>   Probability at 0.01 FDR: 0.965
>   Number of proteins above FDR cutoff: 418
>   Number of quantifiable proteins above FDR cutoff: 418
>   Number of peptides for proteins: 822
>   Extracting true protein lengths for zero length proteins. Database: 
> uniref_taxonomy_allcombined_DECOY.fasta
>   Number of proteins fitting criteria for StPeter analysis: 418
>
> The mzML files are in the same directory as the protXML file, and the head 
> of the mzML appears normal:
>
> <?xml version="1.0" encoding="utf-8"?>
> <indexedmzML xmlns="http://psi.hupo.org/ms/mzml"; xmlns:xsi="
> http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="
> http://psi.hupo.org/ms/mzml 
> http://psidev.info/files/ms/mzML/xsd/mzML1.1.2_idx.xsd";>
>   <mzML xmlns="http://psi.hupo.org/ms/mzml"; xmlns:xsi="
> http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="
> http://psi.hupo.org/ms/mzml 
> http://psidev.info/files/ms/mzML/xsd/mzML1.1.0.xsd"; 
> id="SS1_Slot2-4_1_789" version="1.1.0">
>     <cvList count="2">
>       <cv id="MS" fullName="Proteomics Standards Initiative Mass 
> Spectrometry Ontology" version="4.1.56" URI="
> https://raw.githubusercontent.com/HUPO-PSI/psi-ms-CV/master/psi-ms.obo"/>
>       <cv id="UO" fullName="Unit Ontology" version="09:04:2014" URI="
> https://raw.githubusercontent.com/bio-ontology-research-group/unit-ontology/master/unit.obo
> "/>
>     </cvList>
>     <fileDescription>
>       <fileContent>
>         <cvParam cvRef="MS" accession="MS:1000579" name="MS1 spectrum" 
> value=""/>
>
> I also checked within the mzML file to confirm that it does contain MS2 
> scan information.
> Any advice?
>
> Jason
>

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