Viral Fusion ProteinsMembrane FusionCell FusionVirus InternalizationRecombinant Fusion ProteinsViral Envelope ProteinsHIV Envelope Protein gp41Molecular Sequence DataParamyxovirinaeAmino Acid SequenceSpinal FusionGene FusionHemagglutinin Glycoproteins, Influenza VirusHemagglutinins, ViralGiant CellsSpike Glycoprotein, CoronavirusHN ProteinHIV Fusion InhibitorsEncephalitis Viruses, Tick-BorneCell LineHydrogen-Ion ConcentrationVero CellsCercopithecus aethiopsRespirovirusLiposomesOncogene Proteins, FusionProtein Structure, TertiaryReceptors, VirusPeptidesModels, MolecularParainfluenza Virus 1, HumanLipid BilayersCell MembraneVirusesOrthomyxoviridaeRepetitive Sequences, Amino AcidProtein ConformationSARS VirusVirionProtein Structure, SecondaryMembrane LipidsMembrane GlycoproteinsSemliki forest virusInfluenza A virusHIV-1CricetinaeAntiviral AgentsMutationEndosomesCircular DichroismOncogene FusionVirus ReplicationViral ProteinsSequence AlignmentProtein BindingPeptide FragmentsKineticsHeLa CellsGlycoproteinsChick EmbryoTemperatureAmino Acid SubstitutionStructure-Activity RelationshipBase SequenceMembrane Fusion ProteinsSNARE ProteinsCloning, MolecularGreen Fluorescent ProteinsEscherichia coliVesicular Transport ProteinsMembrane ProteinsLuminescent ProteinsTranslocation, GeneticPlasmidsbeta-GalactosidaseBacterial ProteinsLumbar VertebraeQa-SNARE ProteinsTranscription FactorsSequence Homology, Amino AcidInternal FixatorsTranscription, GeneticSpondylolisthesisFlicker FusionSynaptosomal-Associated Protein 25TransfectionMicroscopy, FluorescenceVacuolesCarrier ProteinsGene Expression Regulation, BacterialMaltose-Binding ProteinsR-SNARE ProteinsRecombinant ProteinsGenes, BacterialN-Ethylmaleimide-Sensitive ProteinsDNA-Binding ProteinsBinding SitesCells, CulturedCervical VertebraeSaccharomyces cerevisiae