lock-and-key model

lock-and-key mod·el

a model used to suggest the mode of operation of an enzyme in which the substrate fits into the active site of the protein like a key into a lock.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Arnqvist's test results, reported in the June 25 NATURE, strongly support Eberhard's idea of female choice and raise doubts about the lock-and-key model. The results have impressed students of male genitalia but have not settled the argument, particularly among biologists who call for more research on female anatomy.