How is phosphorylase b converted into phosphorylase a?
A) Addition of a phosphate to a serine residue
B) Dimerization, which forms the active site pocket
C) Cleavage of 10 amino acids from the N-terminal end of the protein
D) Binding of glucose, an allosteric modifier
E) None of the answers is correct.

Question

Quizplus · Accepted Answer

Phosphorylase b is converted into phosphorylase a through the addition of a phosphate group to a serine residue. This phosphorylation activates the enzyme, enabling it to catalyze the breakdown of glycogen into glucose-1-phosphate.

How Is Phosphorylase B Converted into Phosphorylase A