<prompt> PLP is not required for:Cystathionine b synthaseGlutamate decarboxylaseAspaate transaminaseGlucose 6 phosphate dehydrogenase  <response>: Vitamin B6 is involved in a variety of reactions as shown below: Carbohydrate metabolism: Glycogen Phosphorylase Amino Acid Metabolism: All Transaminases - ALT, AST Cystathionine b synthase ,Cystathioninase,decarboxylases, Kynureninase, Heme synthesis, ALA synthase Lipid metabolism:- Synthesis of arachidonic acid, Synthesis of Sphingosine Serine palmitoyltransferase sphingosine-1-phosphate lyase Steroid Hormone action: Removes hormone receptor complex from DNA terminates the action of hormone. Glucose 6 phosphate dehydrogenase requires NADP or vitamin B3 Niacin as a coenzyme. 