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In this paper, we present the results of experimental studies on the influence of different magnesium isotopes, magnetic 25Mg and nonmagnetic 24Mg or 26Mg, on ATP-hydrolytic activity of the isolated myosin subfragment-1. The reaction rate in the presence of magnetic 25Mg isotope turned out to be 2.0–2.5 times higher than that using non-magnetic 24Mg or 26Mg isotopes. In absence of the enzyme, as at...
Calcium ions play a crucial role in the excitation/contraction coupling in smooth muscles. I would like to interpret the biochemical mechanisms underlying Ca2+ exchange and dynamics of such an exchange in the smooth muscles. Particular emphasis is laid on the examination of kinetic, energetic, and catalytic properties of the membrane-linked energy-dependent Ca2+-transporting systems involved in regulation...
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