bigbio / bigbio/quantms

msgf+ needs the disassociation method/fragmentation methods

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#532 1 comment 0 reactions 0 assignees View on GitHub
enhancement low-priority
Dominant language
Nextflow
Stars
83
Forks
57
Avg merge
4h 14m
Merged PRs (30d)
1

Description

### Description of feature

SAGE and Comet use the MS level to target identifications, while MSGF+ uses fragmentation mode HCD, CID, etc. In the current version of the pipeline, if we put HCD in the SDRF and the file is CID, we will not identify any peptide. This is now making me go inside the MS/MS file and try to see which method is used at MS2. I think would be good to contact MSGF team and define the spectrum level that would be used for identification, similar to Comet and SAGE, rather than using the fragmentation mode.

Opinions @jpfeuffer @daichengxin @timosachsenberg

Contributor guide

Open the contributing guide

Research direction

Start by tracing how the pipeline reads fragmentation methods from the SDRF and passes them to MSGF+, then compare that behavior with the Comet and SAGE handling described in the issue. Clarify with the MSGF team which spectrum level should control identification and define tests or example files that demonstrate correct behavior for HCD and CID.

Written by the indexing model from the issue text.

Assessment

Domain
bioinformatics, data-engineering
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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