This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: vitamins, Subject name: Biochemistry
[{'content': 'All of the following require pyridoxine as a co-factor except? \nSelect and explain. \nA. ALA synthase, B. Transamination, C. Glycogen phosphorylase, D. Transketolase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pyridoxal phosphate (PLP) is a coenzyme for enzymes involved in the following raections: Transamination Decarboxylation Glycogen phosphorylase Cystathionine b-synthase and cystathioninase ALA synthase Kynureninase Thiamine is the coenzyme for transketolase reactions Reference: Harpers illustrated biochemistry 30th edition', 'role': 'assistant'}]