IsomerismHeterotaxy SyndromeHeart Defects, CongenitalHeart AtriaSitus InversusHeart Septal DefectsAbnormalities, MultipleVenae CavaeDextrocardiaProtein ConformationLevocardiaHeart Bypass, RightPulmonary VeinsModels, MolecularErythrocruorinsPulmonary Veno-Occlusive DiseaseMagnetic Resonance SpectroscopyGrowth Differentiation Factor 1Fetal HeartCyanosisAbortion, EugenicMolecular StructureStereoisomerismNodal ProteinAtrioventricular NodeStructure-Activity RelationshipFetal DiseasesMolecular ConformationVena Cava, InferiorFontan ProcedureAzygos VeinTachycardia, SupraventricularSinoatrial NodeBinding SitesProlineHeart BlockCrystallography, X-RayProtein BindingUltrasonography, PrenatalKineticsHeart ValvesThermodynamicsAtrial AppendageProtein Structure, SecondaryHeart Septal Defects, AtrialProtein Structure, TertiaryMolecular Sequence DataCircular DichroismPrenatal DiagnosisAmino Acid SequenceInfant, NewbornSyndromeSpectrometry, FluorescenceModels, ChemicalBody PatterningLigandsPregnancyEchocardiographyNuclear Magnetic Resonance, BiomolecularHydrogen BondingHydrogen-Ion ConcentrationNucleic Acid ConformationProtein FoldingAsiaGestational AgeMolecular Dynamics SimulationHalogensCatalysisSpectrophotometry, UltravioletTemperatureEscherichia coliSubstrate SpecificityProtein DenaturationMutationSpleenComputer SimulationSolutionsTime FactorsMutagenesis, Site-DirectedHydrolysisStomachCatalytic DomainRecombinant ProteinsCyclizationRetrospective StudiesDimerizationSpectrophotometry, InfraredAllosteric RegulationProtein Structure, QuaternaryIndicators and ReagentsChemistryTryptophanAmino Acid SubstitutionSolventsWaterChemical PhenomenaStatic ElectricityPeptidesBacterial ProteinsHydrophobic and Hydrophilic Interactions