Glycogen Phosphorylase, Muscle Form

Glycogen Phosphorylase a, Muscle Form; Glycogen Phosphorylase b, Muscle Form; Myophosphorylase a and b
An isoenzyme of GLYCOGEN PHOSPHORYLASE that catalyzes the degradation of GLYCOGEN in muscle. Mutation of the gene coding this enzyme is the cause of McArdle disease (GLYCOGEN STORAGE DISEASE TYPE V).