antigen binding
B cell receptor activity
narrow
MHC activity
narrow
antibody activity
related
major histocompatibility complex activity
narrow
major histocompatibility complex antigen display activity
narrow
opsonin activity
narrow
Binding to an antigen, any substance which is capable of inducing a specific immune response and of reacting with the products of that response, the specific antibody or specifically sensitized T-lymphocytes, or both. Binding may counteract the biological activity of the antigen. Antigen binding by an MHC protein complex allows the antigen to be displayed to a T cell or NK cell.
GO:0005488
binding
is_a