Activation, conversion from glycogen phosphorylase B to glycogen phosphorylase A

AMP is an inhibitor of glycogen phosphorylase.

Glycogen phosphorylase can not cleave the alpha-1,6-glycosidic bonds at glycogen branch points

glycogen phosphorylase, glycogen debranching enzyme, phosphoglutomutase

the last step is ofcourse glycogen breakdown.......before that inactive glycogen phosphorylase-b is activated and phosphorylated to glycogen phosphorylase-a

by the help of activated phosphorylase kinase........

......phosphorylase kinase was activated by activated protien kinase..and activated protien kinase was activated by cyclic amp...........