Answer:
A and C
A. the transfer of 3-glucose units from one branch to another.
C. cleaving alpha (1 to 6) sugar linkages
Explanation:
Glycogenolysis Enzymes
Two enzymes participate in glycogenolysis:
Glycogen phosphorylase, which catalyzes phosphorolysis or phosphorolytic cleavage of alpha 1-4 glycosidic bonds, which consists of the sequential separation of glucose residues from the non-reducing end, depending on the reaction:
(glucose) n + Pi3 ← → (glucose) n-1 + glucose-1-P
This reaction is very advantageous for the cell, compared to one of hydrolysis.
Glycogen debranching enzyme.
Glycogen phosphorylase cannot cleave O-glycosidic bonds in alpha (1-6). The glycogen de-branching enzyme has two activities: alpha (1-4) transferase glycosyl that transfers each unit of trisaccharide to the non-reducing end, and eliminates branching by alpha 1-6 glycosidic bonds:
glucose-6-P + H2O2 → glucose + Pi
