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Proteomics

Proteomics

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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Related Experiment Video

Updated: Jun 5, 2025

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

Published on: November 15, 2017

Compartment-Resolved Proteomics with Deep Extracellular Matrix Coverage.

Maxwell C McCabe^1,2, Anthony J Saviola^1,2, Kirk C Hansen^1,2

¹Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, Aurora, CO, USA.

|December 16, 2024

Summary

This summary is machine-generated.

This study presents a mass spectrometry proteomics pipeline to comprehensively profile cellular and extracellular matrix (ECM) proteins. The method enhances the characterization of ECM composition in various tissues, aiding disease research.

Keywords:

collagen extracellular matrix mass spectrometry matrisome protein extraction proteomics

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Glycoproteomics of the Extracellular Matrix: A Method for Intact Glycopeptide Analysis Using Mass Spectrometry

Glycoproteomics of the Extracellular Matrix: A Method for Intact Glycopeptide Analysis Using Mass Spectrometry

Published on: April 21, 2017

Area of Science:

Proteomics
Biochemistry
Cell Biology

Background:

The extracellular matrix (ECM) is crucial for tissue structure, development, and disease.
Accurate characterization of ECM composition is vital for understanding its biological roles.
Existing methods may not fully capture the diverse and insoluble components of the ECM.

Purpose of the Study:

To develop and validate an integrated pipeline for comprehensive proteomic profiling of cellular and ECM proteins.
To enable unbiased coverage of core ECM and associated proteins, including insoluble fractions.
To establish a reproducible method for ECM enrichment and quantification across diverse tissue types.

Main Methods:

A multi-step protocol involving stepwise extraction of cellular and ECM proteins.
Enzymatic digestion into peptides, followed by peptide cleanup and mass spectrometry (MS) analysis.
Bioinformatic data processing pipeline optimized for ECM-focused analysis, including LC-MS/MS.

Main Results:

The pipeline provides unbiased coverage of cellular, ECM-associated, and core-ECM proteins.
It successfully profiles ECM fractions resistant to strong chaotropic agents like urea and guanidine hydrochloride.
Optimized extraction buffers demonstrate effectiveness across various tissue types and MS platforms.

Conclusions:

This protocol enables systematic, proteome-wide mapping of the extracellular matrix.
It offers improved profiling of core ECM and matrisome-associated proteins, including insoluble components.
The method facilitates reproducible ECM enrichment and quantification, advancing tissue analysis.