2,535 results found
    1. Biochemistry and Chemical Biology

    Membranes linked by trans-SNARE complexes require lipids prone to non-bilayer structure for progression to fusion

    Michael Zick et al.
    Lipids with a propensity to form nonbilayer structures must be present for the last step of membrane fusion to take place.
    1. Biochemistry and Chemical Biology

    A distinct tethering step is vital for vacuole membrane fusion

    Michael Zick, William T Wickner
    Rigorous assays of membrane fusion show that a distinct tethering step is required for lumenal compartment mixing in a manner that extends beyond simply increasing the amount of total trans-SNARE complex.
    1. Structural Biology and Molecular Biophysics

    Sequential conformational rearrangements in flavivirus membrane fusion

    Luke H Chao et al.
    The West Nile Virus envelope protein catalyzes membrane fusion through low-pH induced conformational rearrangement, with a rate determined by the formation of two trimeric complexes at the contact zone between the virus and target membrane.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Distinct functional determinants of influenza hemagglutinin-mediated membrane fusion

    Tijana Ivanovic, Stephen C Harrison
    The mechanism of membrane-fusion catalysis in influenza viral infection of target cells is robust against the presence of a large fraction of non-productive viral fusion proteins.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Timing of ESCRT-III protein recruitment and membrane scission during HIV-1 assembly

    Daniel S Johnson et al.
    During viral assembly, ESCRTIII and VPS4 are recruited after most of the HIV-1 membrane is bent but disappear prior to scission of the virion from the cell.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The role of scaffold reshaping and disassembly in dynamin driven membrane fission

    Martina Pannuzzo et al.
    Computational modeling of a dynamin-constricted membrane neck can rank proposed shape changes of the helical scaffold in terms of their fission aptitude and elucidate the associated pathways.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Structural inhibition of dynamin-mediated membrane fission by endophilin

    Annika Hohendahl et al.
    The BAR protein endophilin spaces out turns of the dynamin helix, blocking its active conformational change and membrane fission.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sec17/Sec18 act twice, enhancing membrane fusion and then disassembling cis-SNARE complexes

    Hongki Song et al.
    Sec17 (αSNAP) and Sec18 (NSF) are shown to act twice, to promote fusion per se and to recycle SNAREs after fusion.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Influenza-virus membrane fusion by cooperative fold-back of stochastically induced hemagglutinin intermediates

    Tijana Ivanovic et al.
    Long-lived intermediate states formed by glycoprotein catalysts are an essential part of the process used by influenza virus particles to infect cells.
    1. Structural Biology and Molecular Biophysics

    How small-molecule inhibitors of dengue-virus infection interfere with viral membrane fusion

    Luke H Chao et al.
    Single-particle studies of dengue-virus membrane fusion and the effect of small-molecule inhibitors of infection clarify the viral fusion mechanism.

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