This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Tyrosinase is \nSelect and explain. \nA. Oxidase, B. Transferase, C. Lyase, D. Isomerase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tyrosinase is a copper-containing oxidase. It is the rate-limiting enzyme for controlling the production of melanin. Ref: Biochemistry by U. Satyanarayana 3rd edition Pgno : 348', 'role': 'assistant'}]