552 results found
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Mechanistic insights into neurotransmitter release and presynaptic plasticity from the crystal structure of Munc13-1 C1C2BMUN

    Junjie Xu et al.
    The crystal structure of a large C-terminal fragment of Munc13-1 provides a key framework to understand how Munc13-1 mediates neurotransmitter release and presynaptic plasticity.
    1. Neuroscience

    Myosin V functions as a vesicle tether at the plasma membrane to control neurotransmitter release in central synapses

    Dario Maschi et al.
    Synaptic vesicles undergo reversible tethering at the plasma membrane which is activity- and myosin V- dependent.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Membrane bridging by Munc13-1 is crucial for neurotransmitter release

    Bradley Quade et al.
    Cryo-electron tomography, reconstitution, and electrophysiological data show that a fundamental function of Munc13-1 is to bridge synaptic vesicles to the presynaptic plasma membrane.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Re-examining how complexin inhibits neurotransmitter release

    Thorsten Trimbuch et al.
    Challenging a widespread model, biophysical and electrophysiological experiments suggest a new mechanism whereby complexins inhibit neurotransmitter release through electrostatic repulsion between their accessory helix and the membranes.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Synaptic proteins promote calcium-triggered fast transition from point contact to full fusion

    Jiajie Diao et al.
    A combination of advanced optical imaging and cryogenic electron microscopy has been used to explore membrane fusion in a synthetic system and provide new insights into neurotransmitter release.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Autoinhibition of Munc18-1 modulates synaptobrevin binding and helps to enable Munc13-dependent regulation of membrane fusion

    Ewa Sitarska et al.
    Biophysical and functional data strongly support the notion that Munc18-1 acts as a template to assemble the neuronal SNARE complex, and that inhibition of this activity underlies diverse forms of regulation of neurotransmitter release.
    1. Neuroscience

    Corelease of acetylcholine and GABA from cholinergic forebrain neurons

    Arpiar Saunders et al.
    Neurons of the cholinergic system, which release the excitatory neurotransmitter acetycholine throughout the cortex, also release the inhibitory transmitter GABA, with potential implications for cognitive function.
    1. Cell Biology
    2. Neuroscience

    UNC-13L, UNC-13S, and Tomosyn form a protein code for fast and slow neurotransmitter release in Caenorhabditis elegans

    Zhitao Hu et al.
    Long and short variants of a protein called UNC-13, assisted by another called Tomosyn, regulate the timing of synaptic vesicle release in C. elegans.
    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. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Complexin induces a conformational change at the membrane-proximal C-terminal end of the SNARE complex

    Ucheor B Choi et al.
    Complexin can have two conformations when bound to a ternary SNARE complex, one of which induces a conformational change of the SNARE complex at the C-terminus.

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