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HomeHomework HelpbiochemistryWestern Blotting

Western Blotting

Western blotting is a laboratory technique used to detect specific proteins in a sample by separating them through gel electrophoresis, transferring them onto a membrane, and probing with antibodies that bind to the target protein. This method allows for the identification and quantification of proteins based on their size and abundance.

intermediate
3 hours
Biochemistry
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Overview

Western blotting is a powerful technique used in molecular biology to detect specific proteins in a sample. It involves several steps, including gel electrophoresis to separate proteins, transferring them to a membrane, and using antibodies to identify the target proteins. This method is widely used...

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Key Terms

Antibody
A protein produced by the immune system that binds to specific antigens.

Example: Monoclonal antibodies are used in Western blotting to detect specific proteins.

Antigen
A substance that induces an immune response, often a protein.

Example: The target protein in Western blotting acts as an antigen.

Gel Electrophoresis
A technique used to separate proteins based on size and charge.

Example: Proteins are loaded into a gel and separated during electrophoresis.

Membrane Transfer
The process of transferring proteins from a gel to a membrane for detection.

Example: After gel electrophoresis, proteins are transferred to a nitrocellulose membrane.

Detection Method
Techniques used to visualize proteins on a membrane, such as chemiluminescence.

Example: Chemiluminescent detection allows for sensitive visualization of protein bands.

Protein Ladder
A mixture of proteins of known sizes used as a reference in gel electrophoresis.

Example: A protein ladder helps estimate the size of separated proteins.

Related Topics

ELISA
A technique for detecting and quantifying proteins using enzyme-linked antibodies.
intermediate
Mass Spectrometry
An analytical technique used to measure the mass-to-charge ratio of ions, useful in protein analysis.
advanced
Immunohistochemistry
A method for detecting specific proteins in tissue sections using antibodies.
intermediate

Key Concepts

Protein DetectionGel ElectrophoresisAntibody BindingProtein Analysis