<prompt> Allosteric stimulator of glycogen phosphorylaseATPAMPInsulinGlucose-6-phosphate  <response>: AMP formed by degradation of ATP during muscle contraction is an allosteric activator of phosphorylase b. The calcium binds calmodulin and the complex activates phosphorylase kinase.Ref: DM Vasudevan, 7th edition, page no: 129 