Transaminases are PLP-dependent enzymes that

Question

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Transaminases (also called aminotransferases) are enzymes that catalyze the transfer of an amino group from one amino acid to a keto acid, producing a new amino acid and a new keto acid. This process is essential for amino acid metabolism and the synthesis of non-essential amino acids. The coenzyme pyridoxal phosphate (PLP) is required for transaminase activity. Therefore, choice A is the best choice. B is incorrect because the conversion of pyruvate to lactate is catalyzed by lactate dehydrogenase, not transaminases. C is incorrect because the degradation of heme groups is catalyzed by heme oxygenase, not transaminases. D is incorrect because electron donation is not a function of transaminases.

Transaminases Are PLP-Dependent Enzymes That