Question

Properties of competitive inhibitor of an enzyme is/are

• A. It is frequently a feedback inhibitor.
• B. It become covalently attached to an enzyme.
• C. It interferes with the substrate binding to the enzyme.
• D. It causes irreversible inactivation of the enzyme.

Answer 1

The correct option is C It interferes with the substrate binding to the enzyme.

A competitive inhibitor is one which competes with the substrate molecules for the active site of enzyme. The competitive inhibitor has structural similarity with the substrate and is complementary to the active site of the enzyme, hence it interferes with the substrate binding to the enzyme molecule.