143 results found
    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

    Acute disruption of the synaptic vesicle membrane protein synaptotagmin 1 using knockoff in mouse hippocampal neurons

    Jason D Vevea, Edwin R Chapman
    Knockoff is a tool for researchers who wish to acutely disrupt a membrane protein.
    1. Cell Biology
    2. Neuroscience

    Synaptotagmin 1 directs repetitive release by coupling vesicle exocytosis to the Rab3 cycle

    Yunsheng Cheng et al.
    Experiments in C. elegans reveal how synaptotagmin and Rab3, the 'yin and yang' of synapses, control whether transmitter vesicles remain docked at the presynaptic membrane or release their contents into the synapse.
    1. Neuroscience

    Doc2B acts as a calcium sensor for vesicle priming requiring synaptotagmin-1, Munc13-2 and SNAREs

    Sébastien Houy et al.
    Doc2B functions in two distinct vesicle priming steps; membrane localization occludes upstream Ca2+-dependent priming, whereas Ca2+-binding and interaction with synaptotagmin-1, SNAREs, and Munc13-2 are involved in downstream priming, which makes vesicles readily releasable.
    1. Neuroscience

    Ca2+ sensor synaptotagmin-1 mediates exocytosis in mammalian photoreceptors

    Justin J Grassmeyer et al.
    The vesicular Ca2+ sensor synaptotagmin-1 regulates both fast phasic and slow tonic glutamate release at ribbon synapses of rod and cone photoreceptor cells.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    PtdInsP2 and PtdSer cooperate to trap synaptotagmin-1 to the plasma membrane in the presence of calcium

    Ángel Pérez-Lara et al.
    Two acidic membrane lipids increase synaptotagmin-1 dwell time and penetration into the membrane, reducing the membrane dissociation of synaptotagmin-1.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Synaptotagmin-1 C2B domain interacts simultaneously with SNAREs and membranes to promote membrane fusion

    Shen Wang et al.
    When the Ca2+-binding loops of the C2B domain insert into a membrane, interactions with a phospholipid and the SNARE complex allow synaptotagmin-1 to bend the membrane.
    1. Cell Biology
    2. Neuroscience

    The postsynaptic t-SNARE Syntaxin 4 controls traffic of Neuroligin 1 and Synaptotagmin 4 to regulate retrograde signaling

    Kathryn P Harris et al.
    Syntaxin 4 regulates retrograde signaling in the postsynaptic compartment at Drosophila synapses by controlling trafficking of Neuroligin and Synaptotagmin 4 cargo.
    1. Cell Biology
    2. Neuroscience

    Synaptotagmin-1 is the Ca2+ sensor for fast striatal dopamine release

    Aditi Banerjee et al.
    Genetic and electrophysiological analyses reveal calcium-triggering mechanisms for dopamine release in the striatum that may enable fast and slow dopamine coding.
    1. Structural Biology and Molecular Biophysics

    Advances in X-ray free electron laser (XFEL) diffraction data processing applied to the crystal structure of the synaptotagmin-1 / SNARE complex

    Artem Y Lyubimov et al.
    Building on previous work (Uervirojnangkoorn et al., 2015), we demonstrate how improved methods for processing XFEL diffraction data enable the determination of structures from poorly diffracting crystals.

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