Myocytes, CardiacMyocardiumMolecular WeightChromatography, AffinityElectrophoresis, Polyacrylamide GelChromatography, Ion ExchangeCells, CulturedChromatography, GelHeartAnimals, NewbornCardiomegalyKineticsMolecular Sequence DataSubstrate SpecificityMyocardial ContractionChromatographyAmino Acid SequenceHydrogen-Ion ConcentrationRats, Sprague-DawleyHeart VentriclesChromatography, DEAE-CelluloseRats, WistarAmino AcidsCalciumMitochondria, HeartIsoelectric PointEscherichia coliIsoelectric FocusingChromatography, High Pressure LiquidCloning, MolecularMyocardial Reperfusion InjuryEmbryonic Stem CellsCardiotonic AgentsSarcomeresRecombinant ProteinsCrystallizationSignal TransductionCell DifferentiationCell SizeBase SequenceGATA4 Transcription FactorHydroxyapatitesCalcium Channels, L-TypeApoptosisIsoproterenolEnzyme ActivationBlotting, WesternCell LineGene ExpressionHypertrophyMice, TransgenicConnexin 43RabbitsEnzyme StabilityAmmonium SulfateMuscle CellsSarcolemmaPhosphorylationCalcium SignalingMuscle ProteinsSarcoplasmic Reticulum Calcium-Transporting ATPasesSodium-Calcium ExchangerCardiac MyosinsTemperatureTime FactorsCardiomyopathiesImmunodiffusionMyocardial IschemiaMyoblasts, CardiacRNA, MessengerSarcoplasmic ReticulumDurapatiteIsoenzymesVentricular MyosinsVentricular RemodelingAdrenergic beta-AgonistsCattleSolubilityMice, Inbred C57BLCytosolChemical PrecipitationInduced Pluripotent Stem CellsHeart FailureCell SurvivalMicroscopy, ConfocalMacromolecular SubstancesEnzyme InhibitorsCentrifugation, Density GradientReactive Oxygen SpeciesAtrial Natriuretic FactorCardiomyopathy, DilatedProtein BindingCell HypoxiaGene Expression RegulationChromatography, AgaroseExcitation Contraction CouplingSepharoseCell SeparationAdenoviridaeSequence Homology, Amino Acid