3,449 results found
    1. Cell Biology

    Cooperation between tropomyosin and α-actinin inhibits fimbrin association with actin filament networks in fission yeast

    Jenna R Christensen et al.
    The contractile ring actin binding proteins tropomyosin Cdc8 and a-actinin Ain1 synergize to effectively compete with the endocytic actin patch protein fimbrin Fim1 for associating with F-actin networks.
    1. Cell Biology

    A plasma membrane template for macropinocytic cups

    Douwe M Veltman et al.
    Rings of actin polymerisation that form around PIP3/Ras patches in the cell membrane drive the formation of macropinocytic cups.
    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. 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. 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. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Calponin-homology domain mediated bending of membrane-associated actin filaments

    Saravanan Palani et al.
    Combination of actin and curly on lipid membranes constitutes a new, minimalistic system to generate high curvature actin rings that can contract upon the action of myosin II filaments.
    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
    2. Developmental Biology

    Dpp controls growth and patterning in Drosophila wing precursors through distinct modes of action

    Pablo Sanchez Bosch et al.
    Striped expression of Dpp in Drosophila wing precursors leads to graded signalling activity that positions wing veins and, in parallel, promotes growth in a gradient-independent manner by supplying signalling activity above a threshold.
    1. Cell Biology
    2. Physics of Living Systems

    Emergence of a smooth interface from growth of a dendritic network against a mechanosensitive contractile material

    Medha Sharma et al.
    A smooth and circular interface can form between domains of the cell cortex from local induction of a contractile actomyosin ring by centrifugal pushing forces of an expanding Arp2/3 actin network.
    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.

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