IsomerismHeterotaxy SyndromeHeart Defects, CongenitalHeart AtriaSitus InversusHeart Septal DefectsAbnormalities, MultipleVenae CavaeDextrocardiaLevocardiaProtein ConformationHeart Bypass, RightPulmonary VeinsErythrocruorinsPulmonary Veno-Occlusive DiseaseModels, MolecularGrowth Differentiation Factor 1Fetal HeartCyanosisAbortion, EugenicMagnetic Resonance SpectroscopyNodal ProteinAtrioventricular NodeFetal DiseasesVena Cava, InferiorMolecular StructureFontan ProcedureAzygos VeinSinoatrial NodeTachycardia, SupraventricularStereoisomerismHeart BlockProlineUltrasonography, PrenatalProtein BindingHeart ValvesMolecular ConformationBinding SitesAtrial AppendageCrystallography, X-RayProtein Structure, SecondaryHeart Septal Defects, AtrialProtein Structure, TertiaryMolecular Sequence DataKineticsCircular DichroismPrenatal DiagnosisInfant, NewbornAmino Acid SequenceThermodynamicsSyndromeStructure-Activity RelationshipSpectrometry, FluorescenceBody PatterningPregnancyEchocardiographyLigandsProtein FoldingMolecular Dynamics SimulationAsiaNuclear Magnetic Resonance, BiomolecularGestational AgeModels, ChemicalHydrogen-Ion ConcentrationNucleic Acid ConformationMutationTime FactorsProtein DenaturationSpleenTemperatureEscherichia coliHydrogen BondingSpectrophotometry, UltravioletStomachComputer SimulationRetrospective StudiesRecombinant ProteinsProtein Structure, QuaternaryMutagenesis, Site-DirectedAllosteric RegulationSolutionsCatalysisCatalytic DomainDimerizationTryptophanSulfhydryl CompoundsPeptidesSulfur CompoundsSolventsAdenosine TriphosphateBacterial ProteinsSubstrate SpecificityHydrolysisFluorescence Resonance Energy TransferSpectrophotometry, InfraredVolatile Organic CompoundsAmino Acid SubstitutionPolymorphism, Single-Stranded ConformationalTreatment OutcomeCysteine