Organic Cation Transport ProteinsOrganic Cation Transporter 1CationsEquilibrative Nucleoside Transport ProteinsPyridinium Compounds1-Methyl-4-phenylpyridiniumTetraethylammoniumBiological TransportTetraethylammonium CompoundsKidney Tubules, ProximalBiological Transport, ActiveCations, MonovalentSodiumIon TransportPotassiumCatecholamine Plasma Membrane Transport ProteinsRubidiumCations, DivalentSqualusCation Transport ProteinsOuabainCarrier ProteinsKineticsLithiumMetals, AlkaliPotassium IsotopesSodium-Potassium-Exchanging ATPaseErythrocytesAnemia, Hemolytic, CongenitalAntiportersHydrogen-Ion ConcentrationCarnitineMembrane Transport ProteinsQuinidineKidneyCell MembraneCimetidineCell Membrane PermeabilityKidney CortexDigoxinMembrane ProteinsCholineMagnesiumMolecular Sequence DataAxonal TransportRubidium RadioisotopesIon ChannelsXenopus laevisOrganic Anion TransportersOrganic Anion Transport Protein 1Amino Acid SequenceCalciumQuaternary Ammonium CompoundsProtein TransportMembrane PotentialsSodium-Potassium-Chloride SymportersOrganic Anion Transporters, Sodium-IndependentChloridesCell LineIonsDogsAdenosine TriphosphateErythrocyte MembraneGramicidinAdenosine TriphosphatasesLLC-PK1 CellsProbenecidAnion Transport ProteinsAcetylcarnitineErgothioneineMembrane Transport ModulatorsMicrovilliMetforminDose-Response Relationship, DrugMutationp-Aminohippuric AcidOctamer Transcription Factor-1OocytesBinding SitesFluorescent Dyes