A small molecule that decreases the activity of an enzyme by binding to a site other than the catalytic site is termed a(n):
A)allosteric inhibitor.
B)alternative inhibitor.
C)competitive inhibitor.
D)stereospecific agent.
E)transition-state analog.

Question

Quizplus · Accepted Answer

An allosteric inhibitor binds to a site other than the catalytic site of an enzyme, thereby decreasing its activity. This is different from a competitive inhibitor, which competitively binds to the active site, and a transition-state analog, which mimics the transition state of a reaction and binds specifically to the active site. Alternative inhibitor and stereospecific agent are not commonly used terms in the context of enzyme inhibition.

A Small Molecule That Decreases the Activity of an Enzyme