Na-K-ATPase generates an active transport potential in the gills of the hyperregulating shore crab Carcinus maenas

The authors compared the properties of the (potential differences) with the well-known properties of the Na-K-ATPase: dependence on biological energy (ATP), on salinity and sodium concentration, susceptibility of PD to depletion of internal K and to the addition of 5 mM internal ouabain. Considering also the magnitude of the PDs measured, the results obtained indicate that it is the Na-K-ATPase that generates an active transport potential for Na in the gills of shore crabs.