Principle of Immunoprecipitation

Immunoprecipitation is a biotechnological method primarily used for the isolation and purification of target proteins and the study of interactions between proteins. The main steps and principles are as follows:

1. Binding of antigen proteins with specific antibodies

In the immune reaction, specific antibodies can bind to antigen proteins in the sample, forming a stable antibody-antigen complex.

2. Addition of Protein A or Protein G

Protein A or Protein G can bind to the Fc region of antibodies, thereby associating with the antibody-antigen complex to form a larger complex.

3. Precipitation and elution

The complex is precipitated using methods such as centrifugation, followed by elution steps to remove non-specifically bound proteins, resulting in the purified target protein.

BiotechPack, A Biopharmaceutical Characterization and Multi-Omics Mass Spectrometry (MS) Services Provider

Related Services:

CO-IP Co-Immunoprecipitation Protein Interaction Analysis

Protein Interaction Analysis

Protein Interaction Mass Spectrometry Analysis

SILAC and Co-Immunoprecipitation Mass Spectrometry Combined Protein Interaction Analysis