ML-7 is an inhibitor of smooth muscle myosin light chain kinase (MLCK) with a Ki value of 0.3 ¿M and displays reversible, ATP-competitive inhibition of Ca2+-calmodulin-dependent and -independent smooth muscle MLCKs. ML-7 also inhibits PKA and PKC with Ki of 21 ?M and 42 ?M, respectively. *For Research & Development use only. Product is not intended for drug, household, or human consumption.