Topic: Enzymes: types, properties, action, classification· Cell Structure and Function

The cofactor of the enzyme carboxypeptidase is:

1. Haem

2. Zinc

3. Niacin

4. Flavin

Doubtly Asked 30 Oct 2026 NEET UG 2024 Practice test neet Save WhatsApp Report

1 answer

Best answer

Answer: 2. Zinc

Key idea: carboxypeptidase is a metalloenzyme whose cofactor is a metal ion, zinc.

Zinc (\(Zn^{2+}\)) is held in the active site and helps break the peptide bond at the carboxyl end of a protein. Zinc is also the cofactor of carbonic anhydrase.

Haem is the prosthetic group of catalase and peroxidase. Niacin (in NAD) and flavin (in FAD) are coenzymes, not metal cofactors.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

Was this answer helpful?

The cofactor of the enzyme carboxypeptidase is:

1 answer

Your answer