Sarcoplasmic ReticulumCalcium-Transporting ATPasesMyocardiumCalciumCalcium-Binding ProteinsSarcoplasmic Reticulum Calcium-Transporting ATPasesRyanodine Receptor Calcium Release ChannelRyanodineDogsCa(2+) Mg(2+)-ATPaseAdenosine TriphosphatasesRabbitsCalsequestrinMicrosomesBiological Transport, ActiveAdenosine TriphosphateEndoplasmic ReticulumCaffeineKineticsCalcium ChannelsRuthenium RedHeartOxalatesMusclesCalmodulinBiological TransportMyocardial ContractionMagnesiumMyocytes, CardiacMuscle ProteinsPenfluridolMersalylHeart VentriclesPhosphorylationVanadiumEgtazic AcidLipid BilayersThapsigarginMuscle, SkeletalCalcium SignalingSodium-Potassium-Exchanging ATPaseIntracellular MembranesVanadatesSheepMembrane PotentialsHydrogen-Ion ConcentrationIon Channel GatingProtein KinasesTerpenesH(+)-K(+)-Exchanging ATPaseElectric ConductivityCell MembraneElectrophoresis, Polyacrylamide GelPotassiumMolecular Sequence DataIsoproterenolTime FactorsAmino Acid SequenceDose-Response Relationship, DrugProtein BindingSodium-Calcium ExchangerMolecular WeightBiophysical PhenomenaIon TransportSarcolemmaCyclic AMP-Dependent Protein KinasesExcitation Contraction CouplingMuscle ContractionCalcium Channels, L-TypePeptide FragmentsSwineTrypsinCalcium-Calmodulin-Dependent Protein KinasesMyofibrilsMuscle, SmoothTetracaineMuscle Fibers, SkeletalArrhythmias, CardiacCyclic AMPProcaineSodiumMicroscopy, ElectronDantroleneProtein TransportProton-Translocating ATPasesBinding SitesMembrane ProteinsMalignant HyperthermiaCardiac OutputAdenosine DiphosphateCells, CulturedCardiomegalyFluorescent DyesCarrier ProteinsHydrolysisModels, BiologicalPhosphatesMembrane Transport ProteinsEndoplasmic Reticulum StressAxonal Transport