Phosphorylase 's a family of allosteric enzymes that catalyze the production of polyglucose such as glycogen, starch or maltodextrin from a glucose-1-phosphate. Phosphorylase's also a common name used for glycogen phosphorylase in honor of Earl W. Sutherland Jr. who in the late 1930's discovered the first phosphorylase. Function More generally, phosphorylases are enzymes that catalyze the addition of a phosphate group from an inorganic phosphate (phosphate+hydrogen) to an acceptor. Don't confu… (More on Phosphorylase)