[Enzyme activity of myosin activated by different cations in a mixed H2O--D2O solvent].

Abstract

The rate of enzymic reaction of ATP, ITP, GTP with myosin is studied in the presence of potassiu, ammonium and calcium ions in H2O--D2O solutions. There is no kinetic isotope effect of ITPase and GTPase reaction in the neutral pH region (VHVD = 1). The value VH/VD for the ATPase reaction in the pH range from 6.5 to 8.5 with all cations studied varies from 1… (More)

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