132 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Assembly and positioning of actomyosin rings by contractility and planar cell polarity

    Ivonne M Sehring et al.
    Contractility wins over the polarity pathway in a tug-of-war to position a cytokinesis-like actomyosin ring at the equator of notochord cells.
    1. Cell Biology

    Curvature-induced expulsion of actomyosin bundles during cytokinetic ring contraction

    Junqi Huang et al.
    Cytokinetic actomyosin ring disassembly occurs through a novel mechanism in which the increased ring curvature, generated through contraction, itself promotes the disassembly process.
    1. Cell Biology

    A novel checkpoint pathway controls actomyosin ring constriction trigger in fission yeast

    Tomás Edreira et al.
    In fission yeast cell wall stress triggers a cytokinesis blockage specifically in the onset of actomyosin ring constriction.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Stress-activated MAPK signaling controls fission yeast actomyosin ring integrity by modulating formin For3 levels

    Elisa Gómez-Gil et al.
    Microscopic and biochemical analysis show that the stress-activated MAP kinase pathway targets the formin For3 to modulate actomyosin ring integrity in response to environmental cues.
    1. Cell Biology

    Cytokinesis in vertebrate cells initiates by contraction of an equatorial actomyosin network composed of randomly oriented filaments

    Felix Spira et al.
    Asymmetric tension increase along the cell equator promotes self-organization of actomyosin into a partially aligned network during cytokinetic cleavage furrow ingression of vertebrate cells.
    1. Physics of Living Systems
    2. Cell Biology

    Cortical flow aligns actin filaments to form a furrow

    Anne-Cecile Reymann et al.
    Compressing the actomyosin network by cortical flow causes filaments to align and form a constricting ring.
    1. Cell Biology
    2. Computational and Systems Biology

    A positive-feedback-based mechanism for constriction rate acceleration during cytokinesis in Caenorhabditis elegans

    Renat N Khaliullin et al.
    Positive feedback between contractile ring myosin and compression-driven cortical flow can explain the exponential accumulation of contractile ring components and constriction rate acceleration that ensures timely cell separation during cytokinesis.
    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. Neuroscience

    The membrane periodic skeleton is an actomyosin network that regulates axonal diameter and conduction

    Ana Rita Costa et al.
    The axonal cytoskeletal contains an actomyosin-II network that controls circumferential axonal contraction and expansion with the potential of regulating fluctuations in diameter during action potential firing, trafficking, and degeneration.
    1. Developmental Biology
    2. Physics of Living Systems

    Cell lineage-dependent chiral actomyosin flows drive cellular rearrangements in early Caenorhabditis elegans development

    Lokesh G Pimpale et al.
    Developmentally controlled chiral counter-rotating actomyosin flows drive cell-lineage spindle skews and cell rearrangements during cytokinesis in early nematode development.

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