Polyethylene GlycolsCell FusionMembrane FusionPolyethylenesPolyethyleneGlycolsViral Fusion ProteinsRecombinant Fusion ProteinsCell MembraneEthylene GlycolsMembrane LipidsCatharticsMembrane Fusion ProteinsLiposomesSNARE ProteinsMembranesIntracellular MembranesVirus InternalizationMolecular Sequence DataGiant CellsCell LineSpinal FusionAmino Acid SequenceMembranes, ArtificialViral Envelope ProteinsGene FusionHydrogen-Ion ConcentrationMembrane PotentialsErythrocyte MembraneVesicular Transport ProteinsMembrane FluidityQa-SNARE ProteinsOncogene Proteins, FusionMutationPropylene GlycolDrug CarriersProtein BindingLipid BilayersMicroscopy, ElectronProtein Structure, TertiaryCrystallizationCricetinaeMembrane GlycoproteinsCell Membrane PermeabilitySolubilityMembrane ProteinsProtein ConformationExocytosisKineticsChemical PrecipitationBisacodylHIV Envelope Protein gp41Cercopithecus aethiopsBase SequenceTemperatureCells, CulturedModels, BiologicalPolymersSynaptosomal-Associated Protein 25Escherichia coliMicroscopy, FluorescenceModels, MolecularPeptidesRecombinant ProteinsPhosphatidylethanolaminesTime FactorsMolecular WeightR-SNARE ProteinsWaterFreeze FracturingCarrier ProteinsHemagglutinin Glycoproteins, Influenza VirusN-Ethylmaleimide-Sensitive ProteinsHeLa CellsGreen Fluorescent ProteinsProtein TransportCalciumSoluble N-Ethylmaleimide-Sensitive Factor Attachment ProteinsParainfluenza Virus 1, HumanSurface PropertiesMunc18 ProteinsAnnexin A7Cloning, MolecularVero CellsVacuolesHemagglutinins, ViralSyntaxin 1HIV Fusion InhibitorsElectrophoresis, Polyacrylamide GelBasement MembraneTransfectionX-Ray DiffractionReceptors, VirusGlycoproteinsHybrid CellsBacterial ProteinsBiocompatible MaterialsQc-SNARE ProteinsBinding SitesPlasmids