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Related Concept Videos

Two-dimensional Gel Electrophoresis01:22

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-PAGE01:27

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.
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 proteins...
DNA Agarose Gel Electrophoresis02:35

DNA Agarose Gel Electrophoresis

Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol.
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Electrophoresis: Overview01:20

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.
There...

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Related Experiment Video

Updated: Jul 6, 2026

Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
12:34

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

Published on: April 2, 2018

Protein profiling based on two-dimensional difference gel electrophoresis.

Gert Van den Bergh1, Lutgarde Arckens

  • 1Laboratory of Neuroplasticity and Neuroproteomics, Katholieke Universiteit Leuven, Leuven, Belgium.

Methods in Molecular Biology (Clifton, N.J.)
|March 29, 2008
PubMed
Summary
This summary is machine-generated.

Two-dimensional fluorescent difference gel electrophoresis (2D-DIGE) offers a sensitive and confident method for screening differential protein expression. This technique reduces variability and increases certainty in identifying expressed proteins compared to traditional methods.

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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

Published on: April 10, 2014

Proteomic Profiling of Macrophages by 2D Electrophoresis
07:53

Proteomic Profiling of Macrophages by 2D Electrophoresis

Published on: November 4, 2014

Related Experiment Videos

Last Updated: Jul 6, 2026

Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome
12:34

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
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

Published on: April 10, 2014

Proteomic Profiling of Macrophages by 2D Electrophoresis
07:53

Proteomic Profiling of Macrophages by 2D Electrophoresis

Published on: November 4, 2014

Area of Science:

  • Proteomics
  • Biochemistry
  • Molecular Biology

Background:

  • Classical two-dimensional electrophoresis (2D-PAGE) has limitations in sensitivity and confidence for screening differential protein expression.
  • There is a need for advanced techniques to improve the accuracy and reliability of proteomic analyses.

Purpose of the Study:

  • To introduce and evaluate two-dimensional fluorescent difference gel electrophoresis (2D-DIGE) as an improved method for differential protein expression analysis.
  • To highlight the advantages of 2D-DIGE over classical 2D-PAGE.

Main Methods:

  • Utilizes fluorescent dyes to label multiple protein samples (up to three dyes per sample).
  • Labeled protein samples are co-loaded onto a single 2D gel for simultaneous separation.
  • Incorporates an internal standard on each gel to minimize gel-to-gel variation.
  • Employs specialized software for scanning and analyzing the 2D electrophoresis gels.

Main Results:

  • 2D-DIGE enables large-scale screening of differential protein expression.
  • Achieves higher confidence and greater sensitivity in detecting protein expression changes.
  • Reduces gel-to-gel variability through co-loading and internal standards.
  • Increases certainty in identifying differentially expressed proteins.

Conclusions:

  • 2D-DIGE is a powerful advancement in proteomic analysis for differential protein expression studies.
  • The method provides more reliable and sensitive results than classical 2D-PAGE.
  • Its ability to reduce variability makes it a valuable tool for high-throughput screening.