Which of the following is not involved in glycogen synthesis? glycogeninamylo-(1,4 to 1,6)-transglycosylaseglycogen phosphorylaseudp-glucoseglycogen synthase

The correct answer is: Glycogen phosphorylase UDP-glucose

Steps of glycogen synthesis (glycogenesis) are:

•Glucose conversion into glucose 6-phosphate by the glucokinase enzyme

•Glucose-6-phosphate conversion into glucose-1-phosphate by the phosphoglucomutase enzyme

•Glucose-1-phosphate conversion into UDP-glucose by the enzyme UDP-glucose pyrophosphorylase

•Creation of initial short glycogen chains by glycogenin

•UDP-glucose is added to the growing glycogen chain to the 4-hydroxyl group of the glucosyl residue by the glycogen synthase enzyme

•Branches are made by glycogen branching enzyme (amylo-α(1:4)→α(1:6)transglycosylase).

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