5,501 results found
    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. Neuroscience

    The Na+/Ca2+, K+ exchanger NCKX4 is required for efficient cone-mediated vision

    Frans Vinberg et al.
    Molecular, genetic, and functional analysis is used to show that the olfactory Na+/Ca2+, K+ exchanger NCKX4 is expressed in cone photoreceptors and is critical for the wide operating range and high temporal resolution of cone-mediated vision.
    1. Biochemistry and Chemical Biology

    HOPS recognizes each SNARE, assembling ternary trans-complexes for rapid fusion upon engagement with the 4th SNARE

    Hongki Song et al.
    The tethering complex HOPS employs affinity for each of the 4 SNAREs to catalyze assembly of 3-SNARE intermediates, supporting an immediate burst of membrane fusion triggered by the 4th SNARE.
    1. Cell Biology
    2. Neuroscience

    Neurotrophins induce fission of mitochondria along embryonic sensory axons

    Lorena Armijo-Weingart et al.
    Induction of the fission of mitochondria-populating sensory axons is shown to be a novel biological action of neurotrophins.
    1. Cell Biology
    2. Developmental Biology

    Mitochondrial fusion is required for spermatogonial differentiation and meiosis

    Grigor Varuzhanyan et al.
    Mitochondrial fusion enables a metabolic transition during spermatogenesis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Fusion surface structure, function, and dynamics of gamete fusogen HAP2

    Juan Feng et al.
    Structure, dynamics, and mutation of a gamete fusion protein and comparisons to viral homologues suggest that after trimerization the domain bearing the membrane-inserting fusion loops can pivot with respect to the trimer 3-fold axis.
    1. Neuroscience

    v-SNARE transmembrane domains function as catalysts for vesicle fusion

    Madhurima Dhara et al.
    Structural flexibility of the synaptobrevin-2 transmembrane domain promotes membrane fusion.
    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. Developmental Biology
    2. Human Biology and Medicine

    Detailed analysis of chick optic fissure closure reveals Netrin-1 as an essential mediator of epithelial fusion

    Holly Hardy et al.
    Chick optic fissure closure is a powerful new model system for epithelial fusion and has revealed Netrin-1 as a conserved and essential mediator of tissue fusion in multiple contexts.
    1. Cell Biology
    2. Neuroscience

    The SNAP-25 linker supports fusion intermediates by local lipid interactions

    Ahmed Shaaban et al.
    The SNAP-25 linker acts as a functional component of SNARE complexes, initially facilitating SNARE interactions and later promoting fusion triggering and pore evolution by local membrane contacts.

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