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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...
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...
Western Blotting01:15

Western Blotting

Western blotting is an analytical technique for protein identification. It has various applications in immunology and medicine, including detecting diseases like bovine spongiform encephalopathy, mad cow disease, and human and feline immunodeficiency virus from biological samples.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.
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...

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Related Experiment Video

Updated: Jun 5, 2026

Detection of Protease Activity by Fluorescent Peptide Zymography
09:56

Detection of Protease Activity by Fluorescent Peptide Zymography

Published on: January 20, 2019

Electrophoretic transfer protein zymography.

Daniel Pan1, Adam P Hill, Anthony Kashou

  • 1Department of Biological Sciences, State University of New York at Binghamton, Binghamton, NY 13902, USA.

Analytical Biochemistry
|January 19, 2011
PubMed
Summary
This summary is machine-generated.

Electrophoretic transfer protein zymography enhances protease detection and molecular weight determination. This method overcomes limitations of traditional zymography for improved proteomic analysis.

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Area of Science:

  • Biochemistry
  • Proteomics
  • Molecular Biology

Background:

  • Zymography is a technique used to detect and characterize proteolytic enzymes.
  • Traditional zymography involves electrophoresis in a gel containing a copolymerized protein substrate.
  • Limitations exist for molecular weight determination and proteomic analysis due to protease migration issues in substrate-containing gels.

Purpose of the Study:

  • To introduce and validate electrophoretic transfer protein zymography (ETPZ) as a solution to overcome zymography's limitations.
  • To enhance the utility of zymography for accurate molecular weight determination and proteomic analysis of proteases.

Main Methods:

  • Samples containing proteolytic enzymes are resolved using nonreducing SDS-PAGE in a gel devoid of protein substrate.
  • Proteins are then electrophoretically transferred from the resolving gel to a receiving gel containing a copolymerized protein substrate.
  • The receiving gel is developed as a zymogram to visualize protease activity.

Main Results:

  • Electrophoretic transfer protein zymography effectively detects and characterizes proteolytic enzymes.
  • The technique allows for more accurate molecular weight determination compared to traditional zymography.
  • Band intensities in the developed zymogram are linearly related to the amount of protease present.

Conclusions:

  • Electrophoretic transfer protein zymography offers a valuable advancement for protease analysis.
  • This method expands the applicability of zymography in molecular weight determination and proteomic studies.
  • Optimizing transfer conditions is crucial for consistent and reliable results in ETPZ.