Question

Within the molecular structure, identify the ligands of glycogen phosphorylase. which one(s), if any, would be considered to be a coenzyme? choose one:

a. only pyridoxal phosphate
b. only glucose

Answer 1

Glycogen phosphorylase has ligands pyridoxal phosphate and glucose, but only pyridoxal phosphate is considered a coenzyme in the reaction.

option a is the correct

Step-by-step explanation:

Glycogen phosphorylase is the key enzyme involved in glycogenolysis, which is the breakdown of glycogen to release glucose units. Within the molecular structure of glycogen phosphorylase, the ligands are the molecules that bind to the enzyme. In this case, the ligands of glycogen phosphorylase are pyridoxal phosphate and glucose.

However, only pyridoxal phosphate can be considered a coenzyme. A coenzyme is a non-protein molecule that binds to an enzyme and helps it perform its catalytic function. Pyridoxal phosphate serves as a coenzyme in the reaction catalyzed by glycogen phosphorylase, aiding in the transfer of a phosphoryl group during glycogenolysis.