The cofactor of the enzyme carboxypeptidase is :

Question

Name the class of enzyme that usually catalyzes the following reaction: \[ S - G + S^{\prime} \rightarrow S + S^{\prime} - G \] Where \( G \) represents a group other than hydrogen, \( S \) is a substrate, and \( S^{\prime} \) is another substrate.

Answer 1

A cofactor is a non-protein chemical compound necessary for an enzyme's biological function. Carboxypeptidase, an enzyme that cleaves amino acid residues from the carboxyl end of peptide chains, relies on a specific metal ion cofactor for its functionality and catalytic activity.

For carboxypeptidase, the cofactor is: Zinc

Zinc ions (Zn²⁺) are vital for carboxypeptidase's enzymatic action. They stabilize the enzyme-substrate complex and directly participate in peptide bond hydrolysis, coordinating water molecules for catalysis.

This dependence on zinc as a cofactor is characteristic of metalloprotease enzymes, including carboxypeptidase. The absence of zinc significantly impairs carboxypeptidase's function and efficiency, highlighting the metal's indispensable role.

The cofactor of the enzyme carboxypeptidase is :

The Correct Option is A

Solution and Explanation

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