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': 'Which amino acid does not take part in transamination \nSelect and explain. \nA. Proline, B. Alanine, C. Tryptophan, D. Histidine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All amino acids can take part in transamination except:\na) Threonine b) Lysine c) Proline', 'role': 'assistant'}]