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
Transamination reaction requires which vitamin? 
Select and explain. 
A. Thiamine, B. Pyridoxin, C. Riboflavin, D. Pentothenic acid
B: Pyridoxin
Answer: B: Pyridoxin 
Explanation: Pyridoxal phosphate (active form of vitamin B6) is the coenzyme for transamination reactions.