1,111 results found
    1. Cell Biology
    2. Computational and Systems Biology

    A quantitative approach for analyzing the spatio-temporal distribution of 3D intracellular events in fluorescence microscopy

    Thierry Pécot et al.
    QuantEv is a fully automatic and semi-parametric method that allows quantitative analysis of the spatio-temporal distribution of complex molecular trafficking objects at the scale of the whole cell.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and mechanism of a phage-encoded SAM lyase revises catalytic function of enzyme family

    Xiaohu Guo et al.
    The first structure of a bacteriophage-encoded S-adenosyl methionine degrading enzyme was solved and demonstrated to catalyze a unimolecular lyase reaction occurring at the domain interface of a trimeric structure.
    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.
    1. Neuroscience

    Variability in the Munc13-1 content of excitatory release sites

    Maria Rita Karlocai et al.
    Different numbers of Munc13-1 molecules build up the specialized regions of the presynaptic plasma membrane called the release sites.
    1. Neuroscience

    Release probability increases towards distal dendrites boosting high-frequency signal transfer in the rodent hippocampus

    Thomas P Jensen et al.
    Excitatory synapses that occur further away from the postsynaptic cell soma exhibit greater neurotransmitter release probability, which appears to improve signal transfer fidelity for high-frequency afferent firing.
    1. Neuroscience

    Human pyramidal to interneuron synapses are mediated by multi-vesicular release and multiple docked vesicles

    Gábor Molnár et al.
    The compactness of synaptic release sites coupled with their four-fold number in humans compared to rats provides unprecedented scaleability in operation of human synapses.
    1. Neuroscience

    Homeostatic plasticity fails at the intersection of autism-gene mutations and a novel class of common genetic modifiers

    Özgür Genç et al.
    Forward genetic screens define a novel genetic landscape by which diverse, unrelated autism risk genes may converge to commonly affect the robustness of synaptic transmission.
    1. Neuroscience

    Spatiotemporal dynamics of multi-vesicular release is determined by heterogeneity of release sites within central synapses

    Dario Maschi, Vitaly A Klyachko
    Release site heterogeneity represents a previously unknown level of structural and functional organization within individual active zones in central synapses, which determines the spatiotemporal dynamics of multi-vesicular release.
    1. Neuroscience

    Synapse-specific and compartmentalized expression of presynaptic homeostatic potentiation

    Xiling Li et al.
    Genetic and electrophysiological analyses reveal that the mechanisms orchestrating the induction and expression of homeostatic plasticity are compartmentalized and operate with exquisite specificity on both sides of the synapse.
    1. Neuroscience

    Elevated synaptic vesicle release probability in synaptophysin/gyrin family quadruple knockouts

    Mathan K Raja et al.
    Synaptophysins and gyrins dampen synaptic strength selectively at low frequencies, hinting that synaptic transmission may play a frequency filtering role in biological computation that is more general than currently envisioned.

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