What is an allosteric effector of an enzymic reaction?
A) A competitive inhibitor.
B) An uncompetitive inhibitor.
C) A substance which affects enzymic activity by binding to a site other than the substrate binding site.
D) A denaturant of the enzyme.
E) A substance which binds to the substrate and thus makes it unavailable to the enzyme.

Question

Quizplus · Accepted Answer

An allosteric effector is a substance that binds to a site on the enzyme which is different from the substrate binding site, but can still affect the activity of the enzyme. This can involve activation or inhibition of the enzyme, and is often used in regulatory mechanisms within cells. A competitive inhibitor (A) binds directly to the active site of the enzyme, while an uncompetitive inhibitor (B) binds to a site other than the active site, but only after the substrate has already bound. Denaturants (D) disrupt the structure of the enzyme, which usually leads to a loss of activity, and a substance which binds to the substrate (E) would prevent the substrate from interacting with the enzyme altogether.

What Is an Allosteric Effector of an Enzymic Reaction