Which of the following is required for glycogen phosphorylase in glycogenolysis?
Ans: B (Pyridoxal phosphate) Ref: Harper's Illustrated Biochemistry, 28th edition.Explanation:Glycogen phosphorylaseThis enzyme catalyzes the rate-limiting step in glvcogenolysis by releasing glucose-i- phosphate from the terminal alpha-1, 4- glycosidic bond.Glycogen phosphorylase has a pyridoxal phosphate (PLP. derived from Vitamin B6) at each catalytic site.
Thiamine pyrophosphate
Pyridoxal phosphate
FAD
Citrate
Glycogen Metabolism and Glycogen Storage