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Related Experiment Videos

ProMoST (Protein Modification Screening Tool): a web-based tool for mapping protein modifications on two-dimensional

Brian D Halligan1, Victor Ruotti, Weihong Jin

  • 1Bioinformatics Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53213, USA. Halligan@mcw.edu

Nucleic Acids Research
|June 25, 2004
PubMed
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ProMoST is a web tool that predicts how post-translational modifications (PTMs) alter protein isoelectric point (pI) and molecular weight. It generates theoretical 2D gel images to help identify potential PTMs in experimental data.

Area of Science:

  • Proteomics
  • Biochemistry
  • Bioinformatics

Background:

  • Post-translational modifications (PTMs) are crucial for protein function and regulation.
  • Two-dimensional (2D) gel electrophoresis separates proteins based on pI and molecular weight, resolving PTM-induced isoforms.
  • Identifying specific PTMs from 2D gel patterns is challenging due to protein-specific pI shifts.

Purpose of the Study:

  • To develop a computational tool, ProMoST, for predicting the impact of PTMs on protein pI and molecular weight.
  • To generate theoretical 2D gel images representing PTM effects for comparison with experimental data.
  • To aid in the identification of specific PTMs by analyzing distinctive theoretical shift patterns.

Main Methods:

  • ProMoST calculates changes in protein pI and molecular weight upon single or multiple PTMs.

Related Experiment Videos

  • The tool generates simulated 2D gel images based on these calculated changes.
  • ProMoST is implemented as a Perl CGI script accessible via a web server.

    • Main Results:

    • ProMoST provides a flexible platform for calculating PTM effects on protein properties.
    • The generated theoretical 2D gel images display distinctive patterns corresponding to different PTMs.
    • These theoretical patterns can be compared to experimental 2D gel results.

    Conclusions:

    • ProMoST facilitates the interpretation of 2D gel electrophoresis data by predicting PTM-induced shifts.
    • The tool aids researchers in identifying likely PTMs and focusing subsequent experimental investigations.
    • ProMoST serves as a valuable resource for proteomics research involving protein modifications.