these results indicate that differences in the physical properties of the membrane lipids per se are unlikely to account for the low affinity of rat heart na+ , k+-atpase for ouabain and also suggest that the use of high concentrations of ouabain required to completely inhibit na+ , k+-atpase activity may cause nonspecific changes in addition to inhibition of na+ , k+-atpase or the sodium pump .
C0001473
atpase
C0001479
sodium pump