title: (Na+ + K+)-activated adenosinetriphosphatase: fluorimetric determination of the associated K+ -dependent 3-O-methylfluorescein phosphatase and its use for the assay of enzyme samples with low activities.
mesh_terms: D000251:Adenosine Triphosphatases / Q000032:analysis* / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000201:enzymology; D002415:Cats; D004789:Enzyme Activation / Q000187:drug effects; D004912:Erythrocytes / Q000201:enzymology; D005452:Fluoresceins; D006801:Humans; D007700:Kinetics; D008722:Methods; D008738:Methyl Ethers; D009206:Myocardium / Q000201:enzymology; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism; D011188:Potassium / Q000494:pharmacology*; D051381:Rats; D012964:Sodium / Q000494:pharmacology*; D013050:Spectrometry, Fluorescence
chemical_list: D005452:Fluoresceins; D008738:Methyl Ethers; D012964:Sodium; D010744:Phosphoric Monoester Hydrolases; D000251:Adenosine Triphosphatases; D011188:Potassium