Membrane Fusion ProteinsMembrane FusionViral Fusion ProteinsVirus InternalizationViral Envelope ProteinsHydrogen-Ion ConcentrationRecombinant Fusion ProteinsMembrane Transport ProteinsAnnexin A7Cell MembraneOrthoreovirus, AvianMolecular Sequence DataSemliki forest virusCell FusionAmino Acid SequenceBacterial Outer Membrane ProteinsMembrane ProteinsProtein Structure, TertiaryEscherichia coli ProteinsMembranesMembrane LipidsEscherichia coliBacterial ProteinsProtein ConformationProtein BindingIntracellular MembranesCarrier ProteinsATP-Binding Cassette TransportersSNARE ProteinsModels, MolecularSilverCell LineLiposomesVirionHIV Envelope Protein gp41Membranes, ArtificialMembrane PotentialsMembrane GlycoproteinsHemagglutinin Glycoproteins, Influenza VirusLipid BilayersCricetinaeViral Matrix ProteinsVesicular Transport ProteinsMicroscopy, ElectronViral ProteinsQa-SNARE ProteinsMembrane FluidityHemagglutinins, ViralCercopithecus aethiopsErythrocyte MembraneExocytosisDrug Resistance, Multiple, BacterialGlycoproteinsMutationVaccinia virusOncogene Proteins, FusionVirus AssemblyBacteriophage PRD1Golgi ApparatusBase SequenceHeLa CellsModels, BiologicalVero CellsOrthomyxoviridaeCell Membrane PermeabilityGene FusionN-Ethylmaleimide-Sensitive ProteinsGreen Fluorescent ProteinsEndoplasmic ReticulumSynaptosomal-Associated Protein 25Spinal FusionProtein TransportCloning, MolecularCryoelectron MicroscopyProtein Structure, SecondaryReceptors, VirusMicroscopy, ImmunoelectronBinding SitesVesicular stomatitis Indiana virusSoluble N-Ethylmaleimide-Sensitive Factor Attachment ProteinsGiant CellsVirus InactivationR-SNARE ProteinsPeptidesKineticsTemperatureParainfluenza Virus 1, HumanMunc18 ProteinsBasement MembraneCells, CulturedSyntaxin 1CytoplasmVacuolesLuminescent ProteinsQc-SNARE ProteinsRecombinant ProteinsElectron Microscope TomographyHIV-1Sequence Homology, Amino AcidMicroscopy, Fluorescence