Related Experiment Video
Updated: Jan 27, 2026
11:33
V3 Stain-free Workflow for a Practical, Convenient, and Reliable Total Protein Loading Control in Western Blotting
Published on: December 30, 2013
23.3K
Ponceau S waste: Ponceau S staining for total protein normalization
Hannah Sander1, Samantha Wallace1, Rachel Plouse1
1Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA, USA.
Analytical Biochemistry
|March 28, 2019
Summary
Total protein normalization using Ponceau S stain is crucial for Western blotting accuracy. This study found that a low-cost 0.01% Ponceau S stain provides the same protein detection sensitivity as more expensive formulations.
Area of Science:
- Biochemistry
- Molecular Biology
- Laboratory Techniques
Background:
- Western blotting requires normalization to minimize errors from sample loading and preparation.
- Total protein normalization is often preferred over housekeeping protein normalization.
- Ponceau S is a common stain for total protein normalization in Western blotting.
Purpose of the Study:
- To investigate the optimal Ponceau S staining protocol for sensitive protein band detection in Western blotting.
- To compare the sensitivity of various Ponceau S concentrations and acid formulations.
Main Methods:
- Systematic exploration of different Ponceau S concentrations (0.001% to 2%) and acid types (acetic acid, trichloroacetic acid, sulfosalicylic acid).
- Evaluation of protein band detection sensitivity across varied staining conditions.
Main Results:
- Protein detection sensitivity remained constant across a wide range of Ponceau S concentrations (0.001% to 2%).
- Lower concentrations, such as 0.001% Ponceau S, demonstrated equivalent sensitivity to the commonly used 0.1% concentration.
- Acid type and concentration did not significantly impact detection sensitivity.
Conclusions:
- A cost-effective 0.01% Ponceau S stain in 1% acetic acid is recommended for total protein normalization.
- This optimized protocol offers equivalent sensitivity to more expensive and complex formulations.
- Simplifying Ponceau S staining protocols can maintain or improve Western blotting data reliability.
Related Concept Videos
01:19Normal Stress
1.4K
Normal stress is a type of stress that occurs when forces act perpendicular, or normal, to a material's cross-sectional area. This stress often arises in structures when subjected to axial loading, which is the application of force along the axis of an object. A practical example of this can be found in bridge truss members.
When a rod is under axial loading, the internal forces and corresponding stress are normal to the plane of the section, so it is termed normal stress. It's important to...
When a rod is under axial loading, the internal forces and corresponding stress are normal to the plane of the section, so it is termed normal stress. It's important to...
1.4K
01:11Normal Distribution
16.8K
The normal, a continuous distribution, is the most important of all the distributions. Its graph is a bell-shaped symmetrical curve, which is observed in almost all disciplines. Some of these include psychology, business, economics, the sciences, nursing, and, of course, mathematics. Some instructors may use the normal distribution to help determine students’ grades. Most IQ scores are normally distributed. Often real-estate prices fit a normal distribution. The normal distribution is...
16.8K
01:14Normal and Shear Force
3.3K
When a beam is subjected to different loads, such as weight, pressure, or other external forces, internal forces are generated within the beam. These forces can have a significant impact on the overall stability and strength of the structure. Engineers use various methods to analyze and determine the magnitude and direction of these internal forces. One common technique used to determine internal forces in beams is the method of sections. This method involves considering an imaginary point or...
3.3K
01:22Applications of Normal Distribution
9.1K
The normal distribution is a useful statistical tool. One of its practical applications is determining the door height after considering the normal distribution of heights of persons, such that many can pass through it easily without striking their heads. The normal distribution can also determine the probability of a person having a height less than a specific height.
The heights of 15 to 18-year-old males from Chile from 1984 to 1985 followed a normal distribution. The mean height is 172.36...
The heights of 15 to 18-year-old males from Chile from 1984 to 1985 followed a normal distribution. The mean height is 172.36...
9.1K
02:32Variation: Normal Distribution, Range, and Standard Deviation
27.0K
In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
27.0K
01:19Electrophysiology of Normal Cardiac Rhythm
8.9K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
8.9K