At the center of a glycogen molecule is:
A) glucose.
B) glycogenin.
C) UDP-glucose.
D) glycogen synthase.
E) glycogen phosphorylase.

Question

Quizplus · Accepted Answer

Glycogenin is the core protein that initiates the synthesis of a glycogen molecule by catalyzing the attachment of glucose molecules to itself. The glucose units are then elongated by the action of glycogen synthase and branched by branching enzymes. Glycogen phosphorylase breaks down the glycogen molecule when glucose is needed. UDP-glucose is a sugar donor molecule that is used by glycogen synthase to elongate the glucose chain. Glucose molecules are not found at the center of a glycogen molecule.

At the Center of a Glycogen Molecule Is