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Related Concept Videos

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.
Southern Blot02:57

Southern Blot

Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...

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Related Experiment Video

Updated: May 17, 2026

V3 Stain-free Workflow for a Practical, Convenient, and Reliable Total Protein Loading Control in Western Blotting
11:33

V3 Stain-free Workflow for a Practical, Convenient, and Reliable Total Protein Loading Control in Western Blotting

Published on: December 30, 2013

Stain-Free technology as a normalization tool in Western blot analysis.

Anne Gürtler1, Nancy Kunz, Maria Gomolka

  • 1Department of Radiation Oncology, LMU, 81377 Munich, Germany.

Analytical Biochemistry
|October 23, 2012
PubMed
Summary
This summary is machine-generated.

Stain-Free technology offers a more reliable method for Western blot normalization compared to traditional housekeeping protein methods. This novel approach enhances accuracy in quantifying protein levels, especially for small regulatory changes.

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Related Experiment Videos

Last Updated: May 17, 2026

V3 Stain-free Workflow for a Practical, Convenient, and Reliable Total Protein Loading Control in Western Blotting
11:33

V3 Stain-free Workflow for a Practical, Convenient, and Reliable Total Protein Loading Control in Western Blotting

Published on: December 30, 2013

Robust Comparison of Protein Levels Across Tissues and Throughout Development Using Standardized Quantitative Western Blotting
08:13

Robust Comparison of Protein Levels Across Tissues and Throughout Development Using Standardized Quantitative Western Blotting

Published on: April 9, 2019

The Fastest Western in Town: A Contemporary Twist on the Classic Western Blot Analysis
11:43

The Fastest Western in Town: A Contemporary Twist on the Classic Western Blot Analysis

Published on: February 5, 2014

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Western blotting is crucial for quantifying proteins but susceptible to errors from inconsistent transfer.
  • Normalization methods like housekeeping protein (HKP) or total protein normalization (TPN) are essential for accurate quantification.
  • Stain-Free technology presents a novel TPN approach for Western blotting.

Purpose of the Study:

  • To evaluate Stain-Free technology as a TPN tool for Western blotting.
  • To compare its performance against glyceraldehyde-3-phosphate dehydrogenase (GAPDH) as a representative HKP normalization strategy.
  • To assess the reliability, robustness, and sensitivity of Stain-Free technology for detecting protein regulation.

Main Methods:

  • Utilized Stain-Free technology for TPN in Western blotting experiments.
  • Employed glyceraldehyde-3-phosphate dehydrogenase (GAPDH) as a control for HKP normalization.
  • Investigated the regulation of MCM7, a DNA licensing replication factor, in irradiated lymphoblastoid cell lines (LCLs).
  • Applied a multiplex Western blotting approach with fluorescently labeled secondary antibodies.

Main Results:

  • Stain-Free technology demonstrated greater reliability and robustness compared to GAPDH-based HKP normalization.
  • The novel TPN method showed increased sensitivity in detecting small protein regulation effects.
  • Stain-Free technology provided additional benefits, including real-time monitoring of gel separation and protein transfer.

Conclusions:

  • Stain-Free technology is a superior normalization tool for Western blotting, offering enhanced accuracy and sensitivity.
  • This method provides valuable checkpoints, improving the overall Western blotting workflow.
  • Stain-Free technology is recommended for precise protein quantification, particularly when studying subtle regulatory changes.