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
Pyridoxine pyridoxine as co-factor in all, except 
Select and explain. 
A. Transamination, B. Transketolation, C. Glycogen phosphorylase, D. Decarboxylation
B: Transketolation
Answer: B: Transketolation 
Explanation: Transamination, decarboxylation and glycogen phosphorylase require pyridoxine.
Transketolation requires TPP.