title: MgATPase activity of vertebrate smooth muscle actomyosin: stimulation by tropomyosin is modified by myosin phosphorylation and its conformational state.
mesh_terms: D000205:Actomyosin / Q000378:metabolism*; D000818:Animals; D017301:Ca(2+) Mg(2+)-ATPase / Q000378:metabolism*; D004789:Enzyme Activation; D066298:In Vitro Techniques; D007700:Kinetics; D009130:Muscle, Smooth / Q000378:metabolism*; D009219:Myosin-Light-Chain Kinase / Q000378:metabolism; D009218:Myosins / Q000378:metabolism; D010766:Phosphorylation; D011487:Protein Conformation; D014335:Tropomyosin / Q000378:metabolism
chemical_list: D014335:Tropomyosin; D000205:Actomyosin; D009219:Myosin-Light-Chain Kinase; D017301:Ca(2+) Mg(2+)-ATPase; D009218:Myosins