Potassium Channels, Inwardly RectifyingDelayed Rectifier Potassium ChannelsPotassium ChannelsPotassium Channels, Voltage-GatedPotassium Channel BlockersPotassiumIon ChannelsIon Channel GatingBarium CompoundsAndersen SyndromePatch-Clamp TechniquesG Protein-Coupled Inwardly-Rectifying Potassium ChannelsOocytesMembrane PotentialsEther-A-Go-Go Potassium ChannelsXenopusShab Potassium ChannelsXenopus laevisElectrophysiologyKv1.1 Potassium ChannelKCNQ Potassium ChannelsCalcium ChannelsKCNQ2 Potassium ChannelKCNQ3 Potassium ChannelElectric ConductivityCyclic Nucleotide-Gated Cation ChannelsBariumKCNQ1 Potassium ChannelShaker Superfamily of Potassium ChannelsKv1.5 Potassium ChannelCesiumTetraethylammoniumShaw Potassium ChannelsKv1.3 Potassium ChannelAction PotentialsPotassium Channels, Calcium-ActivatedKv1.2 Potassium ChannelMolecular Sequence DataAcid Sensing Ion ChannelsCalcium Channel BlockersAmino Acid SequenceKATP ChannelsProtein SubunitsChloride ChannelsLarge-Conductance Calcium-Activated Potassium ChannelsCalcium Channels, L-TypeKv1.4 Potassium Channel4-AminopyridineKineticsHyperpolarization-Activated Cyclic Nucleotide-Gated ChannelsTransfectionConnexinsShal Potassium ChannelsGuinea PigsCell MembraneMutationCell LineSmall-Conductance Calcium-Activated Potassium ChannelsPotassium Channels, Tandem Pore DomainRNA, MessengerAnti-Arrhythmia AgentsCloning, MolecularSodium Channel BlockersTetraethylammonium CompoundsGlyburideGap JunctionsDose-Response Relationship, DrugCalciumNeuronsCalcium Channels, N-TypeCells, CulturedTRPC Cation ChannelsHeart VentriclesMyocardiumCalcium Channels, T-TypeSodiumLong QT SyndromeIon TransportIntermediate-Conductance Calcium-Activated Potassium ChannelsScorpion VenomsCharybdotoxinMyocytes, CardiacRats, Sprague-DawleyHeartConnexin 43Sulfonylurea ReceptorsLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsAdenosine TriphosphateEpithelial Sodium ChannelsQuinidineCromakalimTRPV Cation ChannelsVentricular FunctionRabbitsCalcium Channel AgonistsChloridesPinacidilHEK293 CellsHeart AtriaTRPM Cation Channels