2015
Formation of Giant Unilamellar Proteo-Liposomes by Osmotic Shock
Motta I, Gohlke A, Adrien V, Li F, Gardavot H, Rothman JE, Pincet F. Formation of Giant Unilamellar Proteo-Liposomes by Osmotic Shock. Langmuir 2015, 31: 7091-7099. PMID: 26038815, PMCID: PMC4950989, DOI: 10.1021/acs.langmuir.5b01173.Peer-Reviewed Original ResearchConceptsGiant unilamellar vesiclesLipid-anchored proteinsOsmotic shockTrans-membrane proteinsSingle giant unilamellar vesiclesProtein substratesPeripheral proteinsSpecific lipidsDifferent proteinsPhotobleaching experimentsFluorescence recoveryCell membraneProteinLarge vesiclesPhysiological conditionsModel systemUnilamellar vesiclesPhospholipid bilayersVesiclesSimple generic methodPrevious dataMembraneHigh concentrationsLipidsBilayers
2014
A Half-Zippered SNARE Complex Represents a Functional Intermediate in Membrane Fusion
Li F, Kümmel D, Coleman J, Reinisch KM, Rothman JE, Pincet F. A Half-Zippered SNARE Complex Represents a Functional Intermediate in Membrane Fusion. Journal Of The American Chemical Society 2014, 136: 3456-3464. PMID: 24533674, PMCID: PMC3985920, DOI: 10.1021/ja410690m.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell MembraneKineticsMembrane FusionMiceModels, MolecularProtein Structure, TertiaryRatsSNARE ProteinsThermodynamicsConceptsN-terminal domainMembrane fusionV-SNARET-SNAREsRecent biophysical studiesC-terminal portionSNARE complexTransmembrane domainRegulatory proteinsFunctional intermediatesC-terminusDistinct functionsN-terminusMolecular mechanismsConformational rearrangementsBiophysical studiesVital regulatorZippering mechanismRate-limiting stepBiological membranesSnareFusionComplexinMultiple stagesZippering
2011
Complexin activates and clamps SNAREpins by a common mechanism involving an intermediate energetic state
Li F, Pincet F, Perez E, Giraudo CG, Tareste D, Rothman JE. Complexin activates and clamps SNAREpins by a common mechanism involving an intermediate energetic state. Nature Structural & Molecular Biology 2011, 18: 941-946. PMID: 21785413, PMCID: PMC3736826, DOI: 10.1038/nsmb.2102.Peer-Reviewed Original ResearchComplexin cross-links prefusion SNAREs into a zigzag array
Kümmel D, Krishnakumar SS, Radoff DT, Li F, Giraudo CG, Pincet F, Rothman JE, Reinisch KM. Complexin cross-links prefusion SNAREs into a zigzag array. Nature Structural & Molecular Biology 2011, 18: 927-933. PMID: 21785414, PMCID: PMC3410656, DOI: 10.1038/nsmb.2101.Peer-Reviewed Original ResearchA conformational switch in complexin is required for synaptotagmin to trigger synaptic fusion
Krishnakumar SS, Radoff DT, Kümmel D, Giraudo CG, Li F, Khandan L, Baguley SW, Coleman J, Reinisch KM, Pincet F, Rothman JE. A conformational switch in complexin is required for synaptotagmin to trigger synaptic fusion. Nature Structural & Molecular Biology 2011, 18: 934-940. PMID: 21785412, PMCID: PMC3668341, DOI: 10.1038/nsmb.2103.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Vesicular TransportAmino Acid SequenceAnimalsBinding SitesCrystallography, X-RayHumansMembrane FusionModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedNerve Tissue ProteinsProtein Structure, TertiaryRatsSynaptosomal-Associated Protein 25SynaptotagminsSyntaxin 1Vesicle-Associated Membrane Protein 2
2007
Confinement Free Energy of Surfaces Bearing End-Grafted Polymers in the Mushroom Regime and Local Measurement of the Polymer Density
Li F, Pincet F. Confinement Free Energy of Surfaces Bearing End-Grafted Polymers in the Mushroom Regime and Local Measurement of the Polymer Density. Langmuir 2007, 23: 12541-12548. PMID: 17988162, DOI: 10.1021/la7021374.Peer-Reviewed Original ResearchConceptsPolymer chainsMushroom regimeFree energyEnd-Grafted PolymersSurface force measurementsSingle polymer chainSurface force apparatusEnd-tethered polymer chainsInteraction free energyGrafted polymersForce apparatusPolymer densityForce profilesPolymersConfinement free energyPolymer theoryLipid bilayersIdentical surfacesMushroomlike structuresFree energy approximationForce measurementsSurfacePlanar surfaceGood precisionChain
2006
Transition from long- to short-lived transient pores in giant vesicles in an aqueous medium
Rodriguez N, Cribier S, Pincet F. Transition from long- to short-lived transient pores in giant vesicles in an aqueous medium. Physical Review E 2006, 74: 061902. PMID: 17280091, DOI: 10.1103/physreve.74.061902.Peer-Reviewed Original Research
2004
Hemifusion and fusion of giant vesicles induced by reduction of inter-membrane distance
Heuvingh J, Pincet F, Cribier S. Hemifusion and fusion of giant vesicles induced by reduction of inter-membrane distance. The European Physical Journal E 2004, 14: 269-276. PMID: 15338438, DOI: 10.1140/epje/i2003-10151-2.Peer-Reviewed Original ResearchConceptsInter-membrane distanceGiant unilamellar vesiclesInner leafletMembrane fusionOuter leafletMeans of micromanipulationCommon functionFluorescence microscopyProbe redistributionVesiclesInfluenza virus hemagglutininGiant vesiclesDNA basesModel systemHemifusionUnilamellar vesiclesActual fusionVirus hemagglutininMembraneContact zoneFusionHead groupsGood agreementProteinLeaflets
2001
Short-range specific forces are able to induce hemifusion
Pincet F, Lebeau L, Cribier S. Short-range specific forces are able to induce hemifusion. European Biophysics Journal 2001, 30: 91-97. PMID: 11409468, DOI: 10.1007/s002490100131.Peer-Reviewed Original ResearchConceptsDepletion forcesInterbilayer distanceAdditional attractive forceAmphiphilic moleculesNucleic basesPolar headBiological membranesLipidic systemsModel membranesPossible structuresFluorescent lipid analogsAttractive forceLow water contentLamellar structureLipid analoguesExtra attractionLipid rearrangementBase pairingWater contentMembrane behaviorNucleosidesPhase transitionMembraneMoleculesAdherent vesicles