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MRMaid 2.0: mining PRIDE for evidence-based SRM transitions.

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Summary

MRMaid 2.0 enhances targeted quantitative proteomics by improving selected reaction monitoring (SRM) transition selection. This updated tool utilizes the PRIDE database for more comprehensive and higher-quality peptide identification, aiding protein quantification.

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Area of Science:

  • Proteomics
  • Mass Spectrometry
  • Biochemistry

Background:

  • Selected reaction monitoring (SRM) is a key technique for targeted quantitative proteomics.
  • Accurate selection of proteotypic peptides and their transitions is critical for SRM success.
  • Previous MRMaid tool provided transition suggestions from a limited in-house database.

Purpose of the Study:

  • To present MRMaid 2.0, a significantly improved web-based tool for selecting optimal SRM transitions.
  • To expand the transition suggestion capability using a large public spectral database.
  • To enhance the usability and scope of the MRMaid tool for proteomic research.

Main Methods:

  • Developed a new implementation of the MRMaid tool (MRMaid 2.0).
  • Integrated spectral data from the EBI's PRIDE database.
  • Enabled simultaneous transition list generation for multiple proteins.
  • Implemented in-browser editing and export functionalities for transition lists.

Main Results:

  • MRMaid 2.0 leverages the PRIDE database, vastly increasing transition coverage and quality.
  • The tool now supports simultaneous analysis of multiple proteins.
  • Users can edit and export transition lists directly within the web browser.

Conclusions:

  • MRMaid 2.0 offers substantial improvements for selecting SRM transitions in quantitative proteomics.
  • The expanded database and enhanced features facilitate more robust and efficient proteomic experiments.
  • This tool aids researchers in optimizing targeted protein quantification strategies.