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, InferiorFontan ProcedureAzygos VeinSinoatrial NodeTachycardia, SupraventricularHeart BlockProlineUltrasonography, PrenatalHeart ValvesAtrial AppendageProtein BindingProtein Structure, SecondaryBinding SitesHeart Septal Defects, AtrialProtein Structure, TertiaryStereoisomerismPrenatal DiagnosisMolecular Sequence DataCrystallography, X-RayCircular DichroismMolecular ConformationInfant, NewbornAmino Acid SequenceMolecular StructureSyndromeThermodynamicsKineticsBody PatterningPregnancySpectrometry, FluorescenceEchocardiographyProtein FoldingAsiaMolecular Dynamics SimulationGestational AgeNucleic Acid ConformationNuclear Magnetic Resonance, BiomolecularLigandsProtein DenaturationModels, ChemicalHydrogen-Ion ConcentrationStructure-Activity RelationshipSpleenTemperatureMutationTime FactorsHydrogen BondingEscherichia coliStomachRetrospective StudiesProtein Structure, QuaternaryMutagenesis, Site-DirectedComputer SimulationRecombinant ProteinsDimerizationSolutionsAllosteric RegulationCatalytic DomainTryptophanFluorescence Resonance Energy TransferTreatment OutcomePolymorphism, Single-Stranded ConformationalAmino Acid SubstitutionCatalysisPeptidesBase SequenceSpectrophotometry, UltravioletAdenosine TriphosphateFollow-Up StudiesBacterial ProteinsPeptide FragmentsCysteineStatic ElectricityHydrolysisSolventsEpitopes