This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Biochemistry
[{'content': 'Bends in alpha helix structure are formed by which amino acid? \nSelect and explain. \nA. Glycine, B. Lysine, C. Methionine, D. Glutamine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amino Acids not Found in Alpha Helix are: Proline: Because of a secondary amino group, it introduces kinkin helix Glycine: Because of small side chain it creates a sharp bend in the structure (Glycine impas flexibility to proteins) Amino acids with bulky R groups: e.g. Tryptophan Charged amino acids like Aspaate, Glutamate Amino acid with branch chain at beta carbon - Valine', 'role': 'assistant'}]