A specific region (or atom) in a molecular entity that is capable of
entering into a stabilizing interaction with another molecular entity.
An example of such an interaction is that of an active site in an
enzyme with its substrate. Typical forms of interaction are by hydrogen
bonding, coordination, and ion pair formation. Two binding sites in
different molecular entities are said to be complementary if their
interaction is stabilizing.
The term "binding site" was found in the following pages: