5,275 results found
    1. Plant Biology

    Dynamic F-actin movement is essential for fertilization in Arabidopsis thaliana

    Tomokazu Kawashima et al.
    The movement of F-actin filaments, which is regulated by actin-myosin interactions together with a female gamete-specific Rho-GTPase, enables migration of the Arabidopsis sperm cell nucleus towards the female nucleus; which might account for the loss of centrosomes in flowering plants.
    1. Structural Biology and Molecular Biophysics

    Structural basis of αE-catenin–F-actin catch bond behavior

    Xiao-Ping Xu et al.
    A molecular mechanism for force-dependent binding of the cell adhesion proteins αE-catenin and vinculin to actin is derived from the structure of the αE-catenin actin-binding domain bound to F-actin.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Three F-actin assembly centers regulate organelle inheritance, cell-cell communication and motility in Toxoplasma gondii

    Nicolò Tosetti et al.
    Toxoplasma gondii formins have several non-overlapping roles including generating an apico-basal flux of F-actin that is controlled by phosphorylation and methylation and is essential for motility.
    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. Microbiology and Infectious Disease

    Toxoplasma gondii F-actin forms an extensive filamentous network required for material exchange and parasite maturation

    Javier Periz et al.
    In contrast to current knowledge that predicts that apicomplexan actin is unconventional, use of Chromobodies demonstrate that Toxoplasma F-actin forms a long, stable, highly dynamic tubular network that is required for material transfer and parasite maturation.
    1. Cell Biology
    2. Neuroscience

    A synaptic F-actin network controls otoferlin-dependent exocytosis in auditory inner hair cells

    Philippe FY Vincent et al.
    A synaptic F-actin network tightly controls the flow of synaptic vesicles during exocytosis at the inner hair cell ribbons.
    1. Cell Biology
    2. Neuroscience

    Neurexin–Neuroligin 1 regulates synaptic morphology and functions via the WAVE regulatory complex in Drosophila neuromuscular junction

    Guanglin Xing et al.
    Neurexin–Neuroligin1 complex positively regulates F-actin assembly through direct interaction with WAVE complex to control normal synaptic growth and electrophysiological function in Drosophila neuromuscular junction.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Crenactin forms actin-like double helical filaments regulated by arcadin-2

    Thierry Izoré et al.
    Close evolutionary relationship between eukaryotic F-actin and crenarchaeal crenactin protein is supported by a near-atomic cryoEM structure of double helical filaments, that are inhibited by arcadin-2 through binding to crenactin's hydrophobic groove.
    1. Cell Biology
    2. Physics of Living Systems

    Co-movement of astral microtubules, organelles and F-actin by dynein and actomyosin forces in frog egg cytoplasm

    James F Pelletier et al.
    Live imaging of multiple cytoplasmic networks in frog egg extracts calls for new models for how egg cytoplasm is physically organized during cleavage divisions.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Complex structures of Rsu1 and PINCH1 reveal a regulatory mechanism of the ILK/PINCH/Parvin complex for F-actin dynamics

    Haibin Yang et al.
    Structural, biochemical, and cell biology study revealed that Rsu1, through binding to PINCH1, inhibits the actin bundling ability of ILK/PINCH/Parvin to regulate the actin dynamics at focal adhesion.

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