What enzyme catalyzes breakdown of catecholamines in the synaptic cleft and in the mitochondria of the axon terminal of the presynaptic cell?
A) choline acetyl transferase
B) catechol -O -methyltransferase
C) monoamine oxidase
D) acetylcholinesterase
E) adenylate cyclase

Question

Quizplus · Accepted Answer

Monoamine oxidase (MAO) is the enzyme responsible for the breakdown of catecholamines in the synaptic cleft and in the mitochondria of the axon terminal of the presynaptic cell.

What Enzyme Catalyzes Breakdown of Catecholamines in the Synaptic Cleft