Allosteric modulators seldom resemble the substrate or product of the enzyme.What does this observation show?
A)Modulators likely bind at a site other than the active site.
B)Modulators always act as activators.
C)Modulators bind non-covalently to the enzyme.
D)The enzyme catalyzes more than one reaction.

Question

Quizplus · Accepted Answer

The fact that allosteric modulators do not resemble the substrate or product of the enzyme suggests that they likely bind to a site on the enzyme other than the active site, which is involved in binding the substrate. Allosteric modulators can either activate or inhibit enzyme activity, and they generally bind non-covalently to the enzyme. The observation does not directly imply that the enzyme catalyzes more than one reaction, although it is possible for enzymes to have multiple active sites or catalytic activities.

Allosteric Modulators Seldom Resemble the Substrate or Product of the Enzyme.What