1,143 results found
    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary expansion of apical extracellular matrix is required for the elongation of cells in a novel structure

    Sarah Jacquelyn Smith et al.
    A new morphological structure evolved through extreme changes in cell height requires novel connections to an extracellular matrix network, which predates the origin of structure.
    1. Neuroscience
    2. Physics of Living Systems

    Stiffness and tension gradients of the hair cell’s tip-link complex in the mammalian cochlea

    Mélanie Tobin et al.
    The tip-link complex of the hair cell is mechanically tuned along the tonotopic axis of the cochlea.
    1. Neuroscience

    Early intrinsic hyperexcitability does not contribute to motoneuron degeneration in amyotrophic lateral sclerosis

    Félix Leroy et al.
    Contrary to a long-standing hypothesis, the neuronal death that leads to muscle wastage in amyotrophic lateral sclerosis does not result from overactivity of those neurons during development.
    1. Neuroscience

    Lognormal firing rate distribution reveals prominent fluctuation–driven regime in spinal motor networks

    Peter C Petersen, Rune W Berg
    Neuronal participation in generation of motor patterns in the spinal circuits is lognormal, which is an indication of a rich diversity of activity within the mean-driven as well as the fluctuation-driven regimes.
    1. Neuroscience

    AMPA receptor mediated synaptic excitation drives state-dependent bursting in Purkinje neurons of zebrafish larvae

    Mohini Sengupta, Vatsala Thirumalai
    In vivo recordings in unanesthetized zebrafish larvae show that Purkinje neurons have two stable membrane potential states and that climbing fiber inputs can toggle them to up states during motor episodes.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Structure of bacterial cytoplasmic chemoreceptor arrays and implications for chemotactic signaling

    Ariane Briegel et al.
    Bacterial cytoplasmic chemoreceptors assemble into a sandwich of two hexagonally packed arrays.
    1. Cell Biology
    2. Developmental Biology

    Cell-intrinsic and -extrinsic mechanisms promote cell-type-specific cytokinetic diversity

    Tim Davies et al.
    Functional molecular analysis of cytokinesis in Caenorhabditis elegans four-cell embryos reveals cell-type-specific variation in the fundamental dependence on a robust f-actin cytoskeleton for successful cell division, mediated by both cell-intrinsic and -extrinsic pathways.
    1. Neuroscience

    Multivariate analysis of electrophysiological diversity of Xenopus visual neurons during development and plasticity

    Christopher M Ciarleglio et al.
    The diversity of electrophysiological phenotypes of neurons in a functional network increases over development, but can be modulated, and even reduced by sensory experience; allowing them to adapt to a changing and growing brain.
    1. Developmental Biology
    2. Neuroscience

    Clustered gamma-protocadherins regulate cortical interneuron programmed cell death

    Walter R Mancia Leon et al.
    Pcdhg determine survival of the GABAergic cortical interneuron population that is necessary to establish and maintain proper excitatory to inhibitory balance in the cerebral cortex.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Functional synergy between the Munc13 C-terminal C1 and C2 domains

    Xiaoxia Liu et al.
    Munc13 C-terminal domains synergize to coordinate synaptic vesicle docking, priming and fusion.

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