Membrane PotentialsMembrane Potential, MitochondrialCell MembraneMembranesIntracellular MembranesMembrane LipidsMembranes, ArtificialPotassiumCell Membrane PermeabilityCalciumMitochondriaErythrocyte MembraneMembrane FluiditySodiumCentrifugation, Density GradientElectrophysiologyValinomycinElectric ConductivityHydrogen-Ion ConcentrationAction PotentialsBasement MembraneMitochondrial MembranesIon ChannelsPatch-Clamp TechniquesTime FactorsChloridesModels, BiologicalMembrane Transport ProteinsPotassium ChannelsCells, CulturedAdenosine TriphosphateKineticsBiological Transport, ActiveCell LineNeuronsMicroscopy, ElectronCarbonyl Cyanide p-TrifluoromethoxyphenylhydrazoneFluorescent DyesLipid BilayersMembrane GlycoproteinsGuinea PigsTrityl CompoundsCarbonyl Cyanide m-Chlorophenyl HydrazoneProtein TransportCell FractionationLiposomesCarrier ProteinsSynaptic MembranesMicroelectrodesTemperatureMicroscopy, FluorescenceOuabainRabbitsElectric StimulationNigericinTetrodotoxinApoptosisMutationMolecular Sequence DataEscherichia coliRats, Sprague-DawleyProtonsCarbocyaninesElectrophoresis, Polyacrylamide GelIon Channel GatingPermeabilityDose-Response Relationship, DrugMicroscopy, ConfocalProtein BindingOnium CompoundsBariumCytosolCesiumProtein Structure, TertiarySodium-Potassium-Exchanging ATPaseTetraethylammonium CompoundsSignal TransductionMolecular WeightCytoplasmAmino Acid SequenceDiffusionMicrovilliCattlePotassium Channel BlockersRats, WistarReactive Oxygen SpeciesEndoplasmic ReticulumCalcium ChannelsTetraethylammoniumBacterial ProteinsPhosphatidylcholinesIonophoresIon TransportDetergentsOsmolar ConcentrationSubcellular FractionsMitochondria, LiverMagnesiumRecombinant Fusion ProteinsCytochromes c