[Kinetic parameters of anion adenosine triphosphatase of erythrocytes]

A T Ivashchenko, K R Uteulin, I A Bushneva

Voprosy Meditsinskoi Khimii

|January 1, 1983

Abstract:

Effect of anions on kinetic properties of ATPase from rat erythrocyte membranes was studied. The ATPase activity was competitively inhibited by thiocyanate in mixtures containing sulfite. Thiocyanate, chlorine-anion, bicarbonate and sulfite affected noncompetitively the enzymatic activity as compared with Mg2+-ATP, ADP and calcium. Dicyclohexylcarbodiimide inhibited similarly Mg2+- and Mg2+, SO2-(3)-ATPase activities of membranes. Effect of anions on kinetic parameters of anion-dependent ATPases appears to be analogous in erythrocytes and mitochondria; the data obtained corresponded to early proposed hypothesis of the anion effect on ATPases.

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Abstract:

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