This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
[{'content': 'Adenylate cyclase conves \nSelect and explain. \nA. ATP to ADP, B. ADP to ATP, C. ATP to cAMP, D. AMP to ADP', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Adenylate cyclase (calmodulin-sensitive) trimer, Bacillus anthracis Epinephrine binds its receptor, that associates with a heterotrimeric G protein. The G protein associates with adenylyl cyclase, which conves ATP to cAMP, spreading the signs', 'role': 'assistant'}]