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Implementing the MSFragger Search Engine as a Node in Proteome Discoverer.

Hui-Yin Chang1,2, Sarah E Haynes1, Fengchao Yu1

  • 1Department of Pathology, University of Michigan, Ann Arbor, Michigan 48105, United States.

Journal of Proteome Research
|December 8, 2022
PubMed
Summary
This summary is machine-generated.

MSFragger, a fast proteomics search engine, is now integrated into Proteome Discoverer (PD) software. This integration enhances protein identification and speeds up analysis compared to traditional workflows.

Keywords:
Proteome Discovererliquid chromatography coupled to tandem mass spectrometryproteomics

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Area of Science:

  • Proteomics
  • Computational Biology
  • Bioinformatics

Background:

  • Proteome Discoverer (PD) is a widely used software platform for proteomics data analysis.
  • Efficient and accurate peptide identification is crucial for understanding biological processes.
  • Existing search engines within PD may have limitations in speed or identification depth.

Purpose of the Study:

  • To integrate the MSFragger proteomics search engine as a processing node into the Proteome Discoverer software.
  • To enable validation of MSFragger's open search results using PeptideProphet within PD.
  • To provide users with enhanced search strategies and improved data analysis capabilities.

Main Methods:

  • Implementation of MSFragger as a new node in the Proteome Discoverer workflow.
  • Integration of PeptideProphet (via Philosopher) as an additional node for result validation.
  • Comparison of MSFragger/Percolator performance against conventional SEQUEST/Percolator workflows in PD.

Main Results:

  • Demonstrated improvement in the number of identified PSMs (Peptide Spectrum Matches), peptides, and proteins.
  • Significantly faster search speeds achieved with the MSFragger/Percolator combination.
  • Successful validation of MSFragger open search results within the PD environment.

Conclusions:

  • The MSFragger-PD node offers a faster and more comprehensive approach to proteomics data analysis.
  • This integration enhances the capabilities of Proteome Discoverer for large-scale proteomics studies.
  • The MSFragger-PD node is publicly available for broader adoption in the research community.