one of its more notable effects involves the activation of ca ( ++ ) -dependent proteases , which preferentially target key components of the contractile machinery ( troponins , tropomyosin , c-protein , m-protein , z-discs , alpha-actinin ) and thus cause disassembly of myofilaments prior to any significant hydrolysis of myosin or actin .
C0025979
myofilaments
C0001271
actin