Introduction to Western Blotting

Western blotting is an old but widely used biotechnological technique for detecting proteins in samples. Given the general community and relevance of the research, this is where everything you need to know about the West location is here.


What exactly is western blotting? It is a technique that allows scientists to identify and analyze the protein of interest in a sample of mixed proteins. You can also visit to get the best service of western blotting.

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This technique is mostly based on the transferor absorption of proteins onto a hard membrane so that the proteins can be detected by antibodies. Once the desired protein is identified, it can be further analyzed.


Denaturation and Individual Protein

This first step can be performed in many ways, but the most common is performed using sodium dodecyl sulfate-polyacrylamide (SDS-PAGE) gel electrophoresis.

SDS is a detergent that denatures or degrades proteins by unfolding them and giving them an overall negative charge. After the proteins are denatured, they can be separated by gel electrophoresis.

Transfer proteins across the membrane

As mentioned above, the transfer of proteins from the gel to the membrane is an important aspect of this technique. After electrophoresis, protein transfer can occur.

This can be achieved in many ways but has traditionally been achieved by wet transfer. The filter paper, gel, and nylon membrane are placed in a pile with each piece in contact with each other.

The stack order from bottom to top is as follows: gel, filter paper, nylon membrane, and another piece of filter paper. The bottom of the pile gets wetter and drier towards the top. For the transfer to take place, the nylon membrane must be placed directly over the gel.

Protein visualization

The imaging technique used will vary depending on the type of protein analysis desired. Simply by looking at the total amount of protein transferred, a simple protein-dye can be used to stain the membrane and reveal the amount of protein available.

If you wish to detect a specific protein in a sample containing a mixture of proteins, an immunological detection method should be used. This method uses antibodies that can detect the desired protein.