This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urea cycle, Subject name: Biochemistry
[{'content': 'Enzyme of Urea cycle deficient in Brain is : \nSelect and explain. \nA. Arginase, B. Carbamoyl phosphate synthetase I, C. Ornithine Trans Carbamoylase, D. Argino Succinate Lyase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Enzyme of Urea cycle deficient in Brain is Ornithine Trans Carbamoylase (OTC). This enzyme catalyses the formation of citrulline from carbamoyl phosphate and ornithine. Arginase is absent in kidneys (option -1) CPS-1 is the RLE enzyme (option 2) Argino Succinate Lyase breakdown arginosuccinate in to arginine and fumarate. (option 4)', 'role': 'assistant'}]