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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 21, 2025

Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry

Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry

Published on: October 24, 2018

Top-down proteomics.

David S Roberts^1,2, Joseph A Loo³, Yury O Tsybin⁴

¹Department of Chemistry, Stanford University, Stanford, CA, USA.

Nature Reviews. Methods Primers

|July 15, 2024

Summary

This summary is machine-generated.

Top-down proteomics (TDP) analyzes whole proteins to understand their functions and roles in diseases. This approach offers a holistic view of the proteome, advancing precision medicine and biological system comprehension.

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Last Updated: Jun 21, 2025

Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry

Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry

Published on: October 24, 2018

Bottom-up and Shotgun Proteomics to Identify a Comprehensive Cochlear Proteome

Bottom-up and Shotgun Proteomics to Identify a Comprehensive Cochlear Proteome

Published on: March 7, 2014

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

Area of Science:

Proteomics
Biochemistry
Molecular Biology

Background:

Proteoforms, resulting from genetic and post-translational variations, are crucial biological drivers.
Understanding proteoforms is key to linking genotypes with phenotypes and comprehending biological complexity.
Top-down proteomics (TDP) offers a holistic proteome view by analyzing intact proteins.

Purpose of the Study:

To provide a comprehensive overview of top-down proteomics (TDP).
To explore the principles, recent advancements, and future directions of TDP.
To highlight the applications of TDP in various scientific and clinical fields.

Main Methods:

Intact protein separation and analysis without prior digestion.
Utilizing tandem mass spectrometry for detailed proteoform characterization.
Data acquisition, processing, and analysis for proteoform identification and quantification.

Main Results:

TDP enables deciphering of protein function and disease mechanisms.
Successful identification, characterization, and quantification of proteoforms are achieved.
Demonstrates the utility of TDP in biomedical, biopharmaceutical, and clinical research.

Conclusions:

Top-down proteomics is essential for unraveling biological intricacies and advancing precision medicine.
The methodology provides a holistic understanding of the proteome, crucial for disease mechanism discovery.
Future advancements in TDP promise expanded applications in various scientific domains.