Potassium Channels, Inwardly RectifyingPotassium ChannelsAndersen SyndromeBarium CompoundsDelayed Rectifier Potassium ChannelsPotassiumPotassium Channel BlockersG Protein-Coupled Inwardly-Rectifying Potassium ChannelsPotassium Channels, Voltage-GatedIon Channel GatingMembrane PotentialsPatch-Clamp TechniquesBariumCesiumOocytesXenopusElectric ConductivityIon ChannelsEther-A-Go-Go Potassium ChannelsXenopus laevisElectrophysiologyShab Potassium ChannelsShaker Superfamily of Potassium ChannelsAction PotentialsKv1.3 Potassium ChannelKCNQ1 Potassium ChannelCalcium ChannelsShaw Potassium ChannelsKv1.5 Potassium ChannelMolecular Sequence DataKv1.2 Potassium ChannelAmino Acid SequenceTetraethylammoniumPotassium Channels, Calcium-ActivatedKCNQ Potassium ChannelsKv1.1 Potassium ChannelCloning, MolecularKATP ChannelsKv1.4 Potassium ChannelGuinea PigsLarge-Conductance Calcium-Activated Potassium Channels4-AminopyridineCalcium Channel BlockersKCNQ2 Potassium ChannelPotassium Channels, Tandem Pore DomainHeart VentriclesShal Potassium ChannelsKCNQ3 Potassium ChannelMyocardiumMyocytes, CardiacChloridesKineticsChloride ChannelsCalcium Channels, L-TypeGlyburideTetraethylammonium CompoundsHeartHeart AtriaSmall-Conductance Calcium-Activated Potassium ChannelsDose-Response Relationship, DrugSulfonylurea ReceptorsCalciumRats, Sprague-DawleySodiumAnti-Arrhythmia AgentsCharybdotoxinNeuronsIon TransportMutagenesis, Site-DirectedCells, CulturedIntermediate-Conductance Calcium-Activated Potassium ChannelsTransfectionScorpion VenomsCromakalimAdenosine TriphosphateLong QT SyndromeReceptors, DrugCell MembraneSodium Channel BlockersLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsPinacidilVentricular FunctionPotassium, DietaryRNA, MessengerPotassium ChlorideRabbitsMutationCell LineSpermineCalcium Channels, N-TypeTetrodotoxinQuinidineMagnesiumElectric StimulationRubidiumBenzopyransPotassium DeficiencyApaminCyclic Nucleotide-Gated Cation ChannelsDiazoxide