[18O-exchange reactions in skeletal, cardiac and smooth muscle myosin].
18O-exchange reactions of skeletal, cardiac and smooth muscle myosin were studied. All investigated preparations of myosin catalyse two types of 18O-exchange--intermediate and direct exchanges in the presence of Mg2+. The dependence of 18O-exchange extent on divalent cations have appeared to be similar for different muscle types. This supports the hypothesis of similarity of ATP hydrolysis molecular mechanisms by myosin of different origin.
D000818:Animals; D004285:Dogs; D006801:Humans; D008274:Magnesium / Q000494:pharmacology; D009130:Muscle, Smooth / Q000378:metabolism*; D009132:Muscles / Q000378:metabolism*; D009206:Myocardium / Q000378:metabolism*; D009218:Myosins / Q000378:metabolism*; D010103:Oxygen Isotopes; D011817:Rabbits
D010103:Oxygen Isotopes; D009218:Myosins; D008274:Magnesium
18O-obmennye reaktsii v sisteme miozina skeletnykh, cerdechnoĭ i gladkikh myshts.