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Related Concept Videos

Two-dimensional Gel Electrophoresis01:22

Two-dimensional Gel Electrophoresis

7.7K
Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
7.7K
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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SDS-PAGE01:27

SDS-PAGE

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Gel electrophoresis is a method that separates biological macromolecules like nucleic acids or proteins by forcing them to pass through a gel matrix under an electric field.
A variation of gel electrophoresis, termed  polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
34.0K
Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

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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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Related Experiment Video

Updated: Feb 20, 2026

Proteomic Profiling of Macrophages by 2D Electrophoresis
07:53

Proteomic Profiling of Macrophages by 2D Electrophoresis

Published on: November 4, 2014

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2D-DIGE proteomics.

Kay Ohlendieck1, Paul Dowling1

  • 1Department of Biology, Maynooth University, National University of Ireland, Maynooth, Co. Kildare, Ireland; Kathleen Lonsdale Institute for Human Health Research, Maynooth University, National University of Ireland, Maynooth, Co. Kildare, Ireland.

Advances in Clinical Chemistry
|February 18, 2026
PubMed
Summary
This summary is machine-generated.

Two-dimensional difference gel electrophoresis (2D-DIGE) offers sensitive protein separation for comparative proteomics. This review explores 2D-DIGE advancements for biomarker discovery in biological samples.

Keywords:
Difference gel electrophoresisfluorescent labeling image analysis isoelectric focusing proteomics mass spectrometry

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Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting
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Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting

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Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
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Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome

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Related Experiment Videos

Last Updated: Feb 20, 2026

Proteomic Profiling of Macrophages by 2D Electrophoresis
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Proteomic Profiling of Macrophages by 2D Electrophoresis

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Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting
10:51

Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting

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Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
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Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome

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Area of Science:

  • Biochemistry
  • Proteomics
  • Analytical Chemistry

Background:

  • Gel electrophoresis is crucial for protein separation in biochemistry.
  • Differential fluorescent tagging minimizes variations in comparative proteomic studies.
  • Two-dimensional difference gel electrophoresis (2D-DIGE) is widely used for this purpose.

Purpose of the Study:

  • To review recent advancements in 2D-DIGE.
  • To focus on comparative proteomic applications.
  • To explore 2D-DIGE's suitability for biomarker discovery.

Main Methods:

  • Review of recent literature on 2D-DIGE.
  • Analysis of strategies to enhance sensitivity.
  • Discussion of bioanalytical advantages and limitations.

Main Results:

  • 2D-DIGE offers improved sensitivity for gel-based proteomic analysis.
  • The technique presents bioanalytical advantages for comparative studies.
  • Technical limitations are discussed in the context of applications.

Conclusions:

  • 2D-DIGE is a valuable tool for large-scale screening of cellular systems and biofluids.
  • It supports biomarker discovery in complex biological samples.
  • Further advancements enhance its utility in comparative proteomics.