Ammonia may be released from most amino acids for use in urea synthesis by the sequential action of which enzymes?

Question

Quizplus · Accepted Answer

Ammonia may be released from most amino acids by the sequential action of amino transferase and glutamate dehydrogenase. Amino transferase transfers the amino group from the amino acid to α-ketoglutarate, forming glutamate. Glutamate dehydrogenase then removes the ammonium ion from glutamate, producing ammonia and α-ketoglutarate. The ammonia produced can then be used in urea synthesis. The other answer choices either do not involve glutamate dehydrogenase or involve enzymes not involved in urea synthesis.

Ammonia May Be Released from Most Amino Acids for Use