Application of Phage-Displayed Peptide Library for Epitope Mapping

Antibodies, central components of the adaptive immune system, possess the remarkable ability to specifically recognize and bind to foreign substances known as antigens. This recognition occurs through the interaction of the antibody's antigen-binding site, or paratope, with a specific region on the antigen called the epitope. Understanding the precise nature of these interactions, particularly the identification and characterization of epitopes, is of paramount importance for a wide array of biomedical applications. The mapping of antibody epitopes, the process of experimentally identifying the binding site of an antibody on its target antigen, provides critical insights into antibody function and its diverse applications. Peptide phage display provides a convenient and rapid method to identify epitopes of specific monoclonal antibodies. This protocol highlights the use of a peptide phage display library for epitope identification of a recombinant monoclonal antibody.