Pyridoxine in required as co-factor in all, except
Transamination
Transketolation
Glycogen phosphonylase
Decarboxylation
PLP is closely associated with the metabolism of amino acids. Pyridoxal phosphate paicipates in reactions like transamination, decarboxylation, deamination, transsulfuration, condensation etc. Transketolase: The second group of enzymes that use TPP as co-enzyme are the transketolases, in the hexose monophosphate shunt pathway of glucose. This reaction is possible with TPP Ref: Satyanarayana 4th ed page 377
vitamins