K252a: Cell permeable protein kinase inhibitorK252a is a highly potent cell permeable inhibitor of CaM kinase and phosphorylase kinase . At high concentrations it also inhibitors of serine/threonine protein kinases K252a inhibits tyrosine phosphorylation of Trk A induced by NGF K252a is reported to promote myogenic differentiation in C2 mouse myoblasts K252a: Cell permeable protein kinase inhibitor K252a is a highly potent cell permeable inhibitor of CaM kinase and phosphorylase kinase . At high concentrations it also inhibitors of serine/threonine protein kinases K252a inhibits tyrosine phosphorylation of Trk A induced by NGF K252a is reported to promote myogenic differentiation in C2 mouse myoblasts