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': 'An amino acid which does not paicipate by ahelix formation is: \nSelect and explain. \nA. Leucine, B. Glycine, C. Proline, D. Lysine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Proline', 'role': 'assistant'}]