SarcomeresMice, KnockoutMyofibrilsConnectinMuscle ProteinsPsoas MusclesMusclesActininMice, Inbred C57BLMuscle, SkeletalMuscle, StriatedMuscle ContractionGene Knockout TechniquesMuscle Fibers, SkeletalTropomodulinMyocardiumMyosinsActin CytoskeletonMicroscopy, ElectronMyocytes, CardiacIsotonic ContractionMuscle DevelopmentIsometric ContractionCells, CulturedRana temporariaMyocardial ContractionElasticityBiomechanical PhenomenaActinsDesminHeartStress, MechanicalRabbitsTropomyosinProtein KinasesCalciumTime FactorsDisease Models, AnimalPhenotypeAnuraMicromanipulationAnimals, NewbornModels, BiologicalMuscular DiseasesMyosin Heavy ChainsMice, TransgenicLIM Domain ProteinsMicroscopy, ImmunoelectronMuscle CellsGene TargetingImmobilizationProtein IsoformsGene DeletionImmunohistochemistryFlight, AnimalMicrofilament ProteinsMutationMicroscopy, FluorescenceMice, 129 StrainFluorescent Antibody TechniqueCell DifferentiationSignal TransductionSarcolemmaNeedlesMicroscopyStress FibersMicroscopy, Phase-ContrastMuscle SpindlesMolecular Sequence DataLasersElectric StimulationMicroscopy, ConfocalCarrier ProteinsRNA, MessengerBiophysical PhenomenaGene Expression RegulationBiophysicsMuscle RelaxationBehavior, AnimalCardiomegalyApolipoproteins ELiverCytoskeletonProtein BindingSarcoplasmic ReticulumAmino Acid SequenceBrainChickensChick EmbryoReverse Transcriptase Polymerase Chain ReactionHeart VentriclesNeuronsNerve Tissue ProteinsHomozygoteRats, Sprague-DawleyBlotting, WesternHeterozygoteZebrafishMotor Activity