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
An amino acid which does not paicipate by ahelix formation is: 
Select and explain. 
A. Leucine, B. Glycine, C. Proline, D. Lysine
C: Proline
Answer: C: Proline 
Explanation: C i.e. Proline