Fig. 4.
Kinetic scheme for the phosphorylation of myosin light chains. The unphosphorylated species Myo and AMyo are converted to the phosphorylated species MyoP and AMyoP by the active form of MLCK (i.e., MLCK.CaM.Ca4). The reverse reactions are catalyzed by the active form of myosin light chain phosphatase (i.e., MLCP*).