Membrane FusionLipid BilayersMembranes, ArtificialMembrane LipidsCell MembraneCell FusionPhosphatidylcholinesMembrane FluidityLiposomesMembranesViral Fusion ProteinsMembrane PotentialsIntracellular MembranesMembrane Fusion ProteinsSNARE ProteinsMolecular ConformationRecombinant Fusion ProteinsPhosphatidylethanolaminesCalorimetry, Differential ScanningGramicidinPhospholipidsDimyristoylphosphatidylcholineBiophysicsElectric ConductivityVirus InternalizationAlamethicinBiophysical PhenomenaModels, BiologicalMolecular Sequence DataErythrocyte MembraneAmino Acid SequenceCell Membrane Permeability1,2-DipalmitoylphosphatidylcholineIon ChannelsHydrogen-Ion ConcentrationModels, MolecularThermodynamicsPermeabilityTetraphenylboratePhase TransitionTemperatureMembrane ProteinsVesicular Transport ProteinsWaterQa-SNARE ProteinsSphingomyelinsProtein BindingProtein ConformationExocytosisProtein Structure, TertiaryPorinsPhosphatidylserinesCholesterolViral Envelope ProteinsKineticsModels, ChemicalCell LineFreeze FracturingMathematicsMicroscopy, ElectronDiffusionPhosphatidylglycerolsElectrochemistryMembrane GlycoproteinsProtein Structure, SecondaryLipidsSpinal FusionSpectrometry, FluorescencePeptidesSynaptosomal-Associated Protein 25Fluorescent DyesHydrophobic and Hydrophilic InteractionsCalciumMagnetic Resonance SpectroscopyMutationGene FusionSurface PropertiesAnnexin A7R-SNARE ProteinsBasement MembraneHIV Envelope Protein gp41Membrane Transport ProteinsEscherichia coliN-Ethylmaleimide-Sensitive ProteinsProtein TransportMunc18 ProteinsSoluble N-Ethylmaleimide-Sensitive Factor Attachment ProteinsMicroscopy, FluorescenceGiant CellsSyntaxin 1Hemagglutinin Glycoproteins, Influenza VirusStructure-Activity RelationshipVacuolesErgosterolCationsBinding SitesCricetinaeMitochondrial MembranesMelittenUnilamellar Liposomes