This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry
[{'content': 'Vitamin required for the activity of transaminases is: \nSelect and explain. \nA. Folic acid, B. Nicotinic acid, C. Thiamine, D. Pyridoxine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pyridoxal phosphate (PLP), coenzyme form of vitamin B6 is the prosthetic group of all aminotransferases. During transamination, PLP serves as a "carrier" of amino groups. An enzyme-bound Schiff base is formed between the keto group of enzyme-bound PLP and the a-amino group of an a-amino acid.', 'role': 'assistant'}]