Cations, MonovalentCationsCations, DivalentPotassiumSodiumLithiumRubidiumCesiumMagnesiumMetals, AlkaliIon ChannelsThalliumKineticsCalciumQuaternary Ammonium CompoundsCell Membrane PermeabilityHydrogen-Ion ConcentrationTromethamineMembrane PotentialsIonsElectric ConductivityIon TransportPotassium ChlorideSodium ChlorideBiological Transport, ActiveTryptophanaseGramicidinTRPM Cation ChannelsUranium CompoundsNigericinBinding SitesOuabainOrganic Cation Transport ProteinsOsmolar ConcentrationIon Channel GatingCalcium ChannelsOrganic Cation Transporter 1ManganeseSaltsBariumAdenosine TriphosphateAminacrineSodium-Potassium-Exchanging ATPaseValinomycinPatch-Clamp TechniquesSodium RadioisotopesChloridesStrontiumPermeabilityCation Transport ProteinsPotassium-Hydrogen AntiportersAnionsCell MembraneAllosteric SiteEscherichia coliMolecular Sequence Databeta-MSHDecapodiformesBiological TransportModels, MolecularRabbitsTemperatureElectrophysiologySubstrate SpecificityCalcium ChlorideEdetic AcidCobaltCalcium RadioisotopesEgtazic AcidCholineAntiportersProtein ConformationNucleic Acid ConformationTryptophan SynthaseMeglumineTetraethylammoniumIonophoresAmilorideMetalsEnzyme ActivationLipid BilayersSpermidineAllosteric RegulationLanthanumFructose-BisphosphataseThermodynamicsSodium-Hydrogen AntiporterMethionine AdenosyltransferaseAdenosine TriphosphatasesOocytesAmino Acid SequenceAmmoniaMathematicsTRPC Cation ChannelsChelating AgentsErythrocytesProtein BindingPotassium ChannelsProtonsRuthenium Red