The BM1A EB-virus transformed human lymphocyte cell line contains approximately 950,000 Na+/K(+)-ATPase sites per cell. The turnover number of each site is approx. 2240 molecules of rubidium per min. When cells are exposed to a low extracellular concentration of potassium the intracellular concentration of sodium rises, and the cells respond in the short term by increasing the Vmax of 86Rb+ uptake. In the longer term the cells respond by increasing both the Vmax of 86Rb+ uptake and the Bmax o...Expand abstract
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The effects of a low extracellular concentration of potassium on the activity and numbers of Na+/K+ pumps in an EB-virus transformed human lymphocyte cell line.
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