Cations, MonovalentCationsBinding SitesCations, DivalentThalliumMagnesiumSodiumPotassiumModels, MolecularManganeseCalciumKineticsProtein ConformationMolecular Sequence DataAmino Acid SequenceProtein BindingBinding, CompetitiveSodium-Potassium-Exchanging ATPaseCatecholamine Plasma Membrane Transport ProteinsBase SequenceLithiumTerbiumMutagenesis, Site-DirectedMetalsIonsNaphthalenesulfonatesHydrogen-Ion ConcentrationCrystallography, X-RayLigandsRubidiumSpectrometry, FluorescenceProtein Structure, SecondaryBacteriorhodopsinsStructure-Activity RelationshipMutationProtein Structure, TertiaryThermodynamicsG-QuadruplexesMagnetic Resonance SpectroscopyOrganic Cation Transport ProteinsRecombinant ProteinsDNAIon TransportAspartic AcidAdenosine TriphosphateOrganic Cation Transporter 1Sequence Homology, Amino AcidNucleic Acid ConformationCircular DichroismZincEscherichia coliCattlePromoter Regions, GeneticRabbitsXenopus laevisOocytesTranscription FactorsSubstrate SpecificityProtonsMembrane PotentialsBiophysical PhenomenaPeptide FragmentsOuabainBiological TransportTemperatureAmino Acid SubstitutionBacterial ProteinsDNA-Binding ProteinsMathematicsWaterCell LineIon ChannelsTRPM Cation ChannelsElectron Spin Resonance SpectroscopyTranscription, GeneticTRPC Cation ChannelsCell MembraneTransfectionSequence AlignmentCation Transport ProteinsCarrier ProteinsGene Expression RegulationBinding Sites, AntibodyCloning, MolecularConsensus SequenceRecombinant Fusion ProteinsEnhancer Elements, GeneticIon Channel GatingCells, CulturedSp1 Transcription FactorRadioligand AssayStrontiumRegulatory Sequences, Nucleic AcidConserved SequenceDNA FootprintingMetals, AlkaliPlasmidsNuclear ProteinsCesiumRepressor Proteins