Question

In mammals, which one of the following vitamins is required in amino group transfer reaction?

• A. Riboflavin
• B. Pantothenic acid
• C. Folic acid
• D. Pyridoxine

Hint:

Pyridoxine (vitamin B6) is essential for transamination and other reactions involving amino group transfers in amino acid metabolism.

Answer 1

The Correct Option is D

Step 1: Understanding amino group transfer reactions.
Amino group transfer reactions, such as transamination, are vital in amino acid metabolism. Pyridoxine (vitamin B6) is a coenzyme involved in these reactions. It facilitates the transfer of amino groups between amino acids and keto acids.

Step 2: Analyzing the options.
(A)Riboflavin: Riboflavin is involved in redox reactions but does not play a direct role in amino group transfer.
(B)Pantothenic acid: Pantothenic acid is part of Coenzyme A and is involved in fatty acid metabolism, not amino group transfer.
(C)Folic acid: Folic acid is involved in one-carbon metabolism, particularly in the synthesis of nucleotides, but it is not involved in amino group transfer.
(D)Pyridoxine: Correct — Pyridoxine (vitamin B6) is essential for amino group transfer reactions, acting as a coenzyme in transamination processes.

Step 3: Conclusion.
The correct answer is (D)Pyridoxine, as it plays a crucial role in amino group transfer reactions in mammals.