This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Pyruvate dehydrogenase complex has all enzyme components except \nSelect and explain. \nA. Decarboxylase, B. Transacetylase, C. Dehydrogenase, D. Phosphatase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: PDH complex is made up of three enzymes and requires five coenzymes. The enzymes are : (1) E1 : Pyruvate dehydrogenase or pyruvate decarboxylase, (ii) E2 : dihydrolipoyl transacetylase, and (iii) E3 dihydrolipoyl dehydrogenase. The coenzyme required are thiamine pyrophosphate (APP), lipoic acid, FAD, NAB, and CoA.', 'role': 'assistant'}]