Neuregulin-1NeuregulinsReceptor, Epidermal Growth FactorReceptor, erbB-3Epidermal Growth FactorReceptor, erbB-2Protein ConformationModels, MolecularGenes, erbBProtein BindingBinding SitesProtein Structure, TertiaryMolecular Sequence DataKineticsAmino Acid SequenceProtein Structure, SecondaryCrystallography, X-RaySpectrometry, FluorescenceCircular DichroismLigandsMolecular ConformationMutationThermodynamicsQuinazolinesPhosphorylationSignal TransductionHydrogen-Ion ConcentrationRecombinant ProteinsStructure-Activity RelationshipDimerizationCell LineMutagenesis, Site-DirectedProtein FoldingTransforming Growth Factor alphaMagnetic Resonance SpectroscopyNucleic Acid ConformationEscherichia coliProtein Structure, QuaternaryModels, ChemicalMolecular Dynamics SimulationTemperatureEnzyme ActivationProtein DenaturationAdenosine TriphosphateAntibodies, MonoclonalNuclear Magnetic Resonance, BiomolecularBase SequenceAllosteric RegulationFluorescence Resonance Energy TransferTryptophanCell Line, TumorPeptidesCatalytic DomainAmino Acid SubstitutionCatalysisHydrogen BondingOncogene Proteins v-erbBCysteineHydrolysisModels, BiologicalProtein MultimerizationPeptide FragmentsSubstrate SpecificitySpectrophotometry, UltravioletCell MembraneDNABacterial ProteinsFluorescenceTyrosineTyrphostinsProteinsComputer SimulationAllosteric SiteBreast NeoplasmsTrypsinSequence Homology, Amino AcidCalciumMagnesiumCells, CulturedTransfectionEscherichia coli ProteinsMacromolecular SubstancesSolutionsCattleRecombinant Fusion ProteinsAntineoplastic AgentsTumor Cells, CulturedAnilino NaphthalenesulfonatesCryoelectron MicroscopyCell DivisionStatic ElectricityProtein Kinase InhibitorsNaphthalenesulfonatesDisulfidesTime FactorsElectrophoresis, Polyacrylamide GelFluorescent DyesMembrane ProteinsSpectroscopy, Fourier Transform InfraredProtein-Tyrosine Kinases