Sodium- and adenosine-triphosphate-dependent calcium movements in membrane vesicles prepared from dog erythrocytes.


Inside-out vesicles from the membranes of dog erythrocytes were obtained by the method of Lew & Seymour (1982) for study of Ca movements. In the absence of ATP, 45Ca accumulation by the vesicles was inhibited by external Na and stimulated by internal Na. The presence of either MgCl2, quinidine sulphate, or LaCl3 in the incubation medium inhibited 45Ca… (More)


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