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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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Peptide Identification Using Tandem Mass Spectrometry01:33

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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.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
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Updated: May 1, 2026

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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2DE: the phoenix of proteomics.

Bruno M Oliveira1, Jens R Coorssen2, Daniel Martins-de-Souza3

  • 1Catarinense Federal Institute, Videira Campus, Videira, SC, Brazil.

Journal of Proteomics
|April 8, 2014
PubMed
Summary

Two-dimensional gel electrophoresis (2DE) remains a valuable top-down proteomic approach, complementing newer mass spectrometry (MS) techniques. Integrating 2DE-MS enhances comprehensive proteome analysis, including isoforms and modifications.

Keywords:
2DEBottom-up proteomicsMass spectrometryPost-translational modificationsProtein isoformsShotgun proteomicsTop-down proteomicsTwo-dimensional gel electrophoresis

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Area of Science:

  • Proteomics
  • Analytical Chemistry

Background:

  • Mass spectrometry (MS) advancements have challenged the role of two-dimensional gel electrophoresis (2DE) in proteomic analyses.
  • Growing awareness of limitations in shotgun-MS approaches necessitates re-evaluation of established techniques.

Purpose of the Study:

  • To highlight the enduring value of 2DE-MS as a top-down analytical method.
  • To advocate for the optimization and integration of 2DE with other proteomic techniques.
  • To provide an overview of 2DE milestones in relation to shotgun-MS.

Main Methods:

  • Review of two-dimensional gel electrophoresis (2DE) principles and advancements.
  • Comparative analysis of 2DE-MS with shotgun-MS methodologies.
  • Discussion of protein resolving strategies for comprehensive proteome exploration.

Main Results:

  • 2DE-MS effectively resolves thousands of intact proteins, including isoforms and post-translational modifications.
  • 2DE-MS offers a complementary approach to shotgun-MS, enabling deeper proteome coverage.
  • The integration of 2DE-MS is crucial for a thorough understanding of complex proteomes.

Conclusions:

  • 2DE-MS is a significant and genuine top-down analytical approach in proteomics.
  • Researchers should consider 2DE-MS as an integral part of a proteomic pipeline.
  • Complementary use of 2DE-MS and shotgun-MS maximizes proteomic discovery.