825 results found
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Organic electrochemical transistor arrays for real-time mapping of evoked neurotransmitter release in vivo

    Kai Xie et al.
    An implantable device based on organic electrochemical transistors is developed for quantitative mapping of neurotransmitter release across multiple brain regions, revealing a cross-talk between the mesolimbic and nigrostriatal dopaminergic pathways.
    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. 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. 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

    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. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ca2+-dependent release of synaptotagmin-1 from the SNARE complex on phosphatidylinositol 4,5-bisphosphate-containing membranes

    Rashmi Voleti et al.
    Ca2+-free synaptotagmin-1 binds to neuronal SNARE complexes anchored on nanodiscs, and Ca2+ releases this interaction to induce tight, specific binding to PIP2-containing membranes.
    1. Neuroscience

    Cerebellar and vestibular nuclear synapses in the inferior olive have distinct release kinetics and neurotransmitters

    Josef Turecek, Wade G Regehr
    Inhibition from the cerebellar nuclei to the inferior olive is exclusively asynchronous and GABAergic, whereas the vestibular nuclei provide rapid synchronous inhibition mediated by mixed GABA and glycinergic synapses.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ring-like oligomers of Synaptotagmins and related C2 domain proteins

    Maria N Zanetti et al.
    A model for synchronous neurotransmitter release suggests that when not in the presence of calcium ions, Synaptotagmin proteins form ring-like structures between the vesicle and plasma membrane that prevent spontaneous fusion.
    1. Cell Biology
    2. Neuroscience

    A novel synaptic plasticity rule explains homeostasis of neuromuscular transmission

    Gilles Ouanounou et al.
    Skeletal muscle cells constantly monitor their own activity and that of their partner neuron at synapses, enabling them to provide the neuron with feedback regarding 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.

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