Viral Fusion ProteinsMembrane FusionVirus InternalizationRecombinant Fusion ProteinsCell FusionViral Envelope ProteinsEncephalitis Viruses, Tick-BorneSpike Glycoprotein, CoronavirusMolecular Sequence DataAmino Acid SequenceGiant CellsLiposomesHydrogen-Ion ConcentrationVero CellsCercopithecus aethiopsProtein Structure, TertiaryCell LineSARS VirusModels, MolecularPeptidesProtein Structure, SecondaryMembrane GlycoproteinsProtein ConformationCell MembraneHIV Envelope Protein gp41ParamyxovirinaeOncogene Proteins, FusionGene FusionSpinal FusionHemagglutinins, ViralHN ProteinHemagglutinin Glycoproteins, Influenza VirusRespirovirusHIV Fusion InhibitorsBase SequenceReceptors, VirusMembrane Fusion ProteinsParainfluenza Virus 1, HumanCricetinaeProtein BindingCloning, MolecularMutationGreen Fluorescent ProteinsLipid BilayersRepetitive Sequences, Amino AcidVirionLuminescent ProteinsOrthomyxoviridaeEscherichia coliSemliki forest virusVirusesHIV-1Membrane LipidsViral ProteinsSequence AlignmentInfluenza A virusHeLa CellsPeptide FragmentsKineticsEndosomesAntiviral AgentsMaltose-Binding ProteinsCircular DichroismVirus ReplicationPlasmidsOncogene FusionGlycoproteinsGlutathione TransferaseStructure-Activity RelationshipMembrane ProteinsRecombinant ProteinsSequence Homology, Amino AcidTransfectionBinding SitesAmino Acid Substitutionbeta-GalactosidaseTemperatureChick EmbryoBacterial ProteinsGenetic VectorsTranscription FactorsDNA PrimersTranslocation, GeneticCarrier ProteinsDNA-Binding ProteinsImmunoglobulin Fc Fragments