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
Which amino acid does not take pa in one carbon transfer reactions: 
Select and explain. 
A. Glycine, B. Serine, C. Alanine, D. Histidine
D: Histidine
Answer: D: Histidine 
Explanation: Histidine