An epitope associates with which part of an antigen receptor or antibody?
A)the disulphide bridge
B)the heavy-chain constant regions only
C)variable regions of a heavy chain and light chain combined
D)the light-chain constant regions only
E)the tail

Question

Quizplus · Accepted Answer

Epitopes, also called antigenic determinants, are the specific sites on an antigen that bind to the variable region of a heavy chain and light chain combined on an antibody or T-cell receptor. This binding interaction triggers an immune response against the antigen. Therefore, choice C is the correct answer. The other options do not associate specifically with epitopes.

An Epitope Associates with Which Part of an Antigen Receptor