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Two-dimensional Gel Electrophoresis

Two-dimensional Gel Electrophoresis

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 as cells...

SDS-PAGE

SDS-PAGE

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.
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Electrophoresis: Overview

Electrophoresis: Overview

Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
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Updated: Jun 1, 2026

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

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

Published on: April 2, 2018

Two-dimensional gel electrophoresis in proteomics: a tutorial.

Thierry Rabilloud¹, Cécile Lelong

¹CNRS UMR5249, Chemistry and Biology of Metals, CEA Grenoble, iRTSV/BSBBSI, Grenoble CEDEX 9, France. Thierry.Rabilloud@cea.fr

Journal of Proteomics

|June 15, 2011

Summary

Two-dimensional electrophoresis (2DE) remains a valuable technique in proteomics, offering unique advantages for protein separation and analysis. This tutorial guides users through 2DE methods, highlighting its strengths and applications in the field.

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Published on: April 10, 2014

Electrophoretic Separation of Proteins

Electrophoretic Separation of Proteins

Published on: June 12, 2008

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Last Updated: Jun 1, 2026

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

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

Published on: April 2, 2018

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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Electrophoretic Separation of Proteins

Electrophoretic Separation of Proteins

Published on: June 12, 2008

Area of Science:

Proteomics
Biochemistry
Analytical Chemistry

Background:

Two-dimensional electrophoresis (2DE) has been foundational in the development of proteomics.
While newer methods exist, 2DE retains unique advantages for protein analysis.

Purpose of the Study:

To provide a comprehensive tutorial on 2DE techniques in proteomics.
To guide readers through the entire 2DE process, from sample preparation to protein detection.
To discuss the limitations and benefits of 2DE for optimal application.

Main Methods:

Detailed explanation of the 2DE process, including sample preparation.
Discussion of protein separation based on isoelectric point and molecular weight.
In-gel protein detection methods and analysis.

Main Results:

2DE offers unique capabilities for separating complete proteins.
The technique easily interfaces with immunoblotting for further protein characterization.
Case studies illustrate the practical application of 2DE in proteomics.

Conclusions:

2DE continues to be a relevant technique in modern proteomics.
Understanding 2DE's strengths and limitations is key to its effective application.
The tutorial aims to enhance the reader's perception of 2DE's optimal uses.