sodium:potassium-exchanging ATPase activity sodium/potassium-exchanging ATPase activity sodium pump (Na+ + K+)-ATPase activity ATP phosphohydrolase (Na+/K+-exchanging) MetaCyc:3.6.3.9-RXN Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + Na+(in) + K+(out) = ADP + phosphate + Na+(out) + K+(in). sodium:potassium exchanging ATPase activity Na+,K+ pump Na(+)/K(+)-exchanging ATPase activity RHEA:18356 Na+/K+-ATPase activity Na+,K+-ATPase activity Na,K-activated ATPase activity Na+/K+-exchanging ATPase activity Na(+)/K(+)-ATPase activity EC:3.6.3.9 molecular_function sodium/potassium-transporting ATPase activity Na,K-pump Reactome:REACT_25287 (Na+ + K+)-activated ATPase activity GO:0005391 potassium-transporting ATPase activity sodium ion transmembrane transporter activity