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Related Concept Videos

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...
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...
Special Staining Techniques01:13

Special Staining Techniques

Specialized staining techniques play a vital role in microbiology by enabling the visualization of specific bacterial structures that remain undetectable with standard microscopy methods. These techniques not only enhance the structural visualization of bacterial cells but also provide critical insights into their pathogenicity and classification. Additionally, they support diagnostic and research endeavors in microbiology by identifying key bacterial features.Capsule Staining for Virulence...
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...
Differential Staining Technique01:26

Differential Staining Technique

Differential staining is an essential microbiological technique that exploits variations in cell wall structures to classify and identify microorganisms. It facilitates the distinction of bacteria, aiding in diagnostic and research applications. Two of the most widely used differential staining methods are Gram staining and acid-fast staining, both of which rely on the chemical and structural differences in bacterial cell walls.Gram Staining TechniqueGram staining differentiates bacteria by...

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Related Experiment Video

Updated: May 22, 2026

Fluorescent Silver Staining of Proteins in Polyacrylamide Gels
06:24

Fluorescent Silver Staining of Proteins in Polyacrylamide Gels

Published on: April 21, 2019

Silver staining techniques of polyacrylamide gels.

Holger Bartsch1, Claudia Arndt, Stefanie Koristka

  • 1Carl Gustav Carus University TU Dresden, Dresden, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|May 16, 2012
PubMed
Summary

This study presents three robust and easy-to-perform silver staining methods for proteins in polyacrylamide gels, offering a highly sensitive and reliable alternative for protein detection and analysis.

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Last Updated: May 22, 2026

Fluorescent Silver Staining of Proteins in Polyacrylamide Gels
06:24

Fluorescent Silver Staining of Proteins in Polyacrylamide Gels

Published on: April 21, 2019

A Fast Silver Staining Protocol Enabling Simple and Efficient Detection of SSR Markers using a Non-denaturing Polyacrylamide Gel
10:27

A Fast Silver Staining Protocol Enabling Simple and Efficient Detection of SSR Markers using a Non-denaturing Polyacrylamide Gel

Published on: April 20, 2018

Detection of Glycosaminoglycans by Polyacrylamide Gel Electrophoresis and Silver Staining
05:57

Detection of Glycosaminoglycans by Polyacrylamide Gel Electrophoresis and Silver Staining

Published on: February 25, 2021

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Analytical Chemistry

Background:

  • Polyacrylamide gel electrophoresis (PAGE) is crucial for protein separation.
  • While blotting for immunodetection is common, direct protein staining in gels is necessary for specific applications.
  • Existing protein staining techniques vary in sensitivity, time, and complexity.

Purpose of the Study:

  • To provide robust and easily executable protein staining protocols for polyacrylamide gels.
  • To highlight silver staining as the most sensitive and reliable method for this purpose.
  • To offer updated variations of a classic technique for modern laboratory use.

Main Methods:

  • Detailed protocols for three distinct silver staining methods are presented.
  • Emphasis is placed on the robustness and ease of performance of each method.
  • The methods are designed for use with SDS-PAGE gels.

Main Results:

  • The presented silver staining techniques offer high sensitivity for protein detection.
  • These methods are reliable and reproducible for consistent results.
  • The protocols are user-friendly, reducing technical barriers.

Conclusions:

  • Silver staining remains the gold standard for sensitive protein detection in polyacrylamide gels.
  • The provided methods offer practical and effective solutions for researchers.
  • These protocols enhance the utility of polyacrylamide gel electrophoresis for protein analysis.