158 results found
    1. Cell Biology

    Competition between kinesin-1 and myosin-V defines Drosophila posterior determination

    Wen Lu et al.
    Posterior determination of Drosophila oocyte is defined by competition between kinesin-1 removing posterior determinants from the cortex and myosin-V anchoring them.
    1. Cell Biology

    A disassembly-driven mechanism explains F-actin-mediated chromosome transport in starfish oocytes

    Philippe Bun et al.
    On entry to meiosis, chromosomes scattered in the large oocyte nucleus of starfish are collected by an F-actin network, which contracts by an unexpected, myosin-independent mechanism based on local assembly and global disassembly of actin filaments.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Kinetochore-independent chromosome segregation driven by lateral microtubule bundles

    Christina C Muscat et al.
    Chromosomes in C. elegans female reproductive cells segregate through motor-driven movement along lateral microtubule bundles.
    1. Developmental Biology
    2. Neuroscience

    Robo2 regulates synaptic oxytocin content by affecting actin dynamics

    Savani Anbalagan et al.
    Real-time monitoring of oxytocin-loaded vesicles and synaptic actin dynamics in zebrafish reveal that Slit3-Robo2-Cdc42 signalling maintains steady-state levels of mature oxytocin neuropeptide readily primed to be secreted upon physiological demand.
    1. Developmental Biology
    2. Evolutionary Biology

    Two consecutive microtubule-based epithelial seaming events mediate dorsal closure in the scuttle fly Megaselia abdita

    Juan Jose Fraire-Zamora et al.
    Evolutionary reduction in tissue number involves the simplification of the seaming process but not signaling during epithelial fusion.
    1. Physics of Living Systems

    Length regulation of multiple flagella that self-assemble from a shared pool of components

    Thomas G Fai et al.
    In the microbe Chlamydomonas reinhardtii, a disassembly rate which depends on flagellar length provides an effective method to regulate the length of its two flagella.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Mechanical force induces mitochondrial fission

    Sebastian Carsten Johannes Helle et al.
    Mechanically stimulating mitochondria causes them to divide via the recruitment of the mitochondrial fission machinery to the mechanically strained site, showing that intracellular organelles can be mechanoresponsive.
    1. Cell Biology
    2. Plant Biology

    Stromule extension along microtubules coordinated with actin-mediated anchoring guides perinuclear chloroplast movement during innate immunity

    Amutha Sampath Kumar et al.
    Stromules induced during plant innate immunity dynamically interact and use the cytoskeleton to form and to direct the movement of chloroplasts.
    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. Cell Biology
    2. Plant Biology

    Two mechanisms regulate directional cell growth in Arabidopsis lateral roots

    Charlotte Kirchhelle et al.
    In lateral roots, cells employ a novel pathway to cell edges to control directional growth, which acts independently of the leading paradigm of oriented deposition of cellulose microfibrils at faces.

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