3,288 results found
    1. Neuroscience

    Nanoscale dynamics of synaptic vesicle trafficking and fusion at the presynaptic active zone

    Thirumalini Vaithianathan et al.
    A combination of tethered diffusion of release-ready synaptic vesicles and vesicle-vesicle fusion supports neurotransmitter release at the presynaptic active zone of sensory synapses.
    1. Structural Biology and Molecular Biophysics

    Complexin inhibits spontaneous release and synchronizes Ca2+-triggered synaptic vesicle fusion by distinct mechanisms

    Ying Lai et al.
    Building on previous work (Diao et al., 2012), we show that the mechanism by which complexin suppresses spontaneous fusion is distinct from the mechanism by which it synchronizes Ca2+-triggered fusion.
    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. Neuroscience

    Additive effects on the energy barrier for synaptic vesicle fusion cause supralinear effects on the vesicle fusion rate

    Sebastiaan Schotten et al.
    Independent osmotic, genetic and biochemical perturbations modulate neurotransmitter release in a multiplicative manner.
    1. Neuroscience

    Otoferlin acts as a Ca2+ sensor for vesicle fusion and vesicle pool replenishment at auditory hair cell ribbon synapses

    Nicolas Michalski et al.
    Targeted mutations in a Ca2+-binding site of otoferlin, a transmembrane protein of synaptic vesicles defective in a recessive form of deafness, reveal its Ca2+ sensor role both for vesicle fusion and vesicle pool replenishment.
    1. Neuroscience

    Post-tetanic potentiation lowers the energy barrier for synaptic vesicle fusion independently of Synaptotagmin-1

    Vincent Huson et al.
    Modulation of the energy barrier for membrane fusion is a common mechanism by which sensors in the synapse produce supralinear calcium dependence of vesicle release and short-term synaptic potentiation.
    1. Neuroscience

    CAPS-1 promotes fusion competence of stationary dense-core vesicles in presynaptic terminals of mammalian neurons

    Margherita Farina et al.
    Stationary dense-core vesicles depend on the CAPS-1 protein to fuse with the presynaptic membrane.
    1. Structural Biology and Molecular Biophysics

    Synergistic roles of Synaptotagmin-1 and complexin in calcium-regulated neuronal exocytosis

    Sathish Ramakrishnan et al.
    Cooperative action of synaptotagmin and complexin is needed to arrest all SNARE complexes on a vesicle, and the reversal of the synaptotagmin clamp is sufficient to achieve fast, Ca2+-synchronized fusion.
    1. Neuroscience

    A synaptotagmin suppressor screen indicates SNARE binding controls the timing and Ca2+ cooperativity of vesicle fusion

    Zhuo Guan et al.
    A suppressor screen of dominant-negative synaptotagmin-induced lethality in Drosophila identifies key properties of the protein that regulate fusion, including the SNARE interaction surface.
    1. Cell Biology
    2. Neuroscience

    Fast retrieval and autonomous regulation of single spontaneously recycling synaptic vesicles

    Jeremy Leitz, Ege T Kavalali
    Spontaneous fusion of vesicles at synapses is regulated independently of fusion triggered by action potentials, adding to evidence that the two types of fusion have distinct functions.

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