Question

During aerobic respiration, the conversion of pyruvate into acetaldehyde along with TPP, the cofactor is

• A. $M{g}^{2+}$
• B. $M{n}^{2+}$
• C. $F{e}^{3+}$
• D. $Z{n}^{2+}$

Answer 1

The correct option is A $M{g}^{2+}$

During anaerobic respiration, the enzyme pyruvate decarboxylase converts pyruvate into acetaldehydre and carbon dioxide. This is a decarboxylation reaction. The enzyme requires TPP (thiamine pyrophosphate) and Mg${}^{+2}$ as a cofactor for the reaction to takes place.

Thus, the correct answer is option A.