146 results found
    1. Neuroscience

    Position of UNC-13 in the active zone regulates synaptic vesicle release probability and release kinetics

    Keming Zhou et al.
    The precise position of UNC-13 at the active zone near a synapse depends on the N-terminus of the protein, and the C2A domain in particular, and is essential for accelerating neurotransmitter release.
    1. Neuroscience

    Release-dependent feedback inhibition by a presynaptically localized ligand-gated anion channel

    Seika Takayanagi-Kiya et al.
    An anion-selective ligand gated channel acts as a presynaptic auto-receptor to modulate vesicle release and neuronal excitation.
    1. Neuroscience

    Frequency-dependent mobilization of heterogeneous pools of synaptic vesicles shapes presynaptic plasticity

    Frédéric Doussau et al.
    The mobilization or silencing of two heterogeneous pools of synaptic vesicles via different frequencies probably enables granule cell to Purkinje cell synapses to better discriminate between the high-rate code of sensory information and background noise.
    1. Neuroscience

    Drosophila Synaptotagmin 7 negatively regulates synaptic vesicle release and replenishment in a dosage-dependent manner

    Zhuo Guan et al.
    Drosophila synaptotagmin 7 functions to restrict SV availability and release, but does not act as the Ca2+ sensor mediating the asynchronous release and facilitation remaining in synaptotagmin 1 mutants.
    1. Neuroscience

    Diverse modes of synaptic signaling, regulation, and plasticity distinguish two classes of C. elegans glutamatergic neurons

    Donovan Ventimiglia, Cornelia I Bargmann
    Single-neuron synaptic imaging in vivo demonstrates that highly conserved molecules such as UNC-13, UNC-18, and protein kinase C, which are found at essentially every synapse make different functional contributions in Caenorhabditis elegans glutamatergic neurons.
    1. Neuroscience

    Identification of a Munc13-sensitive step in chromaffin cell large dense-core vesicle exocytosis

    Kwun Nok M Man et al.
    Munc13 proteins are key determinants of large dense-core vesicle (LDCV)-dependent catecholamine release in chromaffin cells.
    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. Evolutionary Biology
    2. Genetics and Genomics

    A common 1.6 mb Y-chromosomal inversion predisposes to subsequent deletions and severe spermatogenic failure in humans

    Pille Hallast et al.
    In addition to its academic merits, characterizing the genetic determinants of male (in)fertility and identifying clinically actionable genetic variants can lead to improved diagnosis or even treatment of such conditions.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    A novel region in the CaV2.1 α1 subunit C-terminus regulates fast synaptic vesicle fusion and vesicle docking at the mammalian presynaptic active zone

    Matthias Lübbert et al.
    A novel region in the CaV2.1 α1 subunit regulates coupling of synaptic vesicles to CaV2.1 calcium channels, synaptic vesicle release and docking, and the size of the fast and total releasable pools of synaptic vesicles.
    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.

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