IsomerismHeterotaxy SyndromeHeart Defects, CongenitalHeart AtriaSitus InversusHeart Septal DefectsAbnormalities, MultipleVenae CavaeDextrocardiaProtein ConformationLevocardiaHeart Bypass, RightPulmonary VeinsErythrocruorinsModels, MolecularPulmonary Veno-Occlusive DiseaseGrowth Differentiation Factor 1Fetal HeartCyanosisAbortion, EugenicMagnetic Resonance SpectroscopyNodal ProteinAtrioventricular NodeFetal DiseasesVena Cava, InferiorFontan ProcedureAzygos VeinTachycardia, SupraventricularSinoatrial NodeProlineHeart BlockBinding SitesProtein BindingProtein Structure, SecondaryUltrasonography, PrenatalCrystallography, X-RayStereoisomerismHeart ValvesMolecular StructureProtein Structure, TertiaryMolecular ConformationAtrial AppendageMolecular Sequence DataAmino Acid SequenceCircular DichroismHeart Septal Defects, AtrialThermodynamicsKineticsPrenatal DiagnosisInfant, NewbornHydrogen BondingDisulfidesSyndromeSpectrometry, FluorescenceBody PatterningProtein FoldingPregnancyEchocardiographyMolecular Dynamics SimulationModels, ChemicalNucleic Acid ConformationNuclear Magnetic Resonance, BiomolecularLigandsStructure-Activity RelationshipAsiaGestational AgeProtein DenaturationHydrogen-Ion ConcentrationTemperatureEscherichia coliCysteineMutagenesis, Site-DirectedMutationCatalysisSpleenTime FactorsRecombinant ProteinsComputer SimulationDimerizationCatalytic DomainStomachPeptidesSolutionsRetrospective StudiesHydrolysisProtein Structure, QuaternarySubstrate SpecificityAmino Acid SubstitutionAllosteric RegulationSpectrophotometry, UltravioletTryptophanWaterPeptide FragmentsBacterial ProteinsSolventsDental BondingStatic ElectricityFluorescence Resonance Energy TransferPolymorphism, Single-Stranded ConformationalBase Sequence