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Related Concept Videos

Proteomics01:33

Proteomics

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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
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Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
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Updated: Oct 26, 2025

TMT Sample Preparation for Proteomics Facility Submission and Subsequent Data Analysis
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ppx: Programmatic Access to Proteomics Data Repositories.

William E Fondrie1, Wout Bittremieux2,3, William S Noble1,4

  • 1Department of Genome Sciences, University of Washington, Seattle, Washington 98195, United States.

Journal of Proteome Research
|August 3, 2021
PubMed
Summary
This summary is machine-generated.

A new Python package, ppx, offers easy access to ProteomeXchange proteomics data for reproducible research. It integrates into workflows, enabling efficient data retrieval and analysis for computational tool development and validation.

Keywords:
FAIRPythonbioinformaticsdata accessdata disseminationdata sharingmass spectrometryproteomicsrepositoryreproducibility

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Area of Science:

  • Proteomics
  • Computational Biology
  • Bioinformatics

Background:

  • Public proteomics and mass spectrometry data repositories are rapidly expanding.
  • Open science practices necessitate accessible data for validation and tool development.

Purpose of the Study:

  • To introduce ppx, a Python package for programmatic access to ProteomeXchange data.
  • To demonstrate ppx's utility in enhancing reproducible research workflows.

Main Methods:

  • Developed ppx, a Python package and command-line tool.
  • Utilized ppx within a Snakemake workflow to reanalyze a published dataset.
  • Employed the ANN-SoLo tool for open modification searching.

Main Results:

  • ppx provides easy programmatic access to ProteomeXchange data (PRIDE, MassIVE).
  • The tool seamlessly integrates into computational workflows like Snakemake.
  • Reanalysis using ppx yielded results consistent with the original study, confirming reproducibility.

Conclusions:

  • ppx facilitates reproducible proteomics data analysis and tool development.
  • The package simplifies data retrieval for benchmarking and large-scale analyses.
  • ppx is an open-source tool promoting open science in proteomics.