5,038 results found
    1. Cell Biology

    DNA damage induces nuclear actin filament assembly by Formin-2 and Spire-1/2 that promotes efficient DNA repair

    Brittany J Belin et al.
    An efficient response to DNA damage requires the assembly of actin filaments in the nucleus.
    1. Cell Biology

    Actin assembly ruptures the nuclear envelope by prying the lamina away from nuclear pores and nuclear membranes in starfish oocytes

    Natalia Wesolowska et al.
    Combined light and electron microscopy reveals a new function for Arp2/3-mediated actin assembly in nuclear envelope rupture, which leads to a separation of nuclear membranes and pores from the lamina.
    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. Evolutionary Biology

    Genetic transformation of Spizellomyces punctatus, a resource for studying chytrid biology and evolutionary cell biology

    Edgar M Medina et al.
    Spizellomycespunctatusis a genetically tractable chytrid and model organism for comparative cell biology for understanding evolution of the cell cycle, actin dynamics, and cellularization in fungi and early eukaryotes.
    1. Cell Biology
    2. Immunology and Inflammation

    Formin-like 1 mediates effector T cell trafficking to inflammatory sites to enable T cell-mediated autoimmunity

    Scott B Thompson et al.
    Lymphocyte migration and autoimmunity induction rely on Formin-like 1-mediated actin network remodeling to push the lymphocyte nucleus through restrictive endothelial barriers.
    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. Neuroscience

    A thalamocortical circuit for updating action-outcome associations

    Virginie Fresno et al.
    Disconnection of the orbitofrontal cortex from the submedius nucleus but not the mediodorsal thalamus prevented rats to respond adaptively following action-outcome reversal, showing differential involvement of these thalamocortical circuits.
    1. Cell Biology
    2. Developmental Biology

    Dual roles for ATP in the regulation of phase separated protein aggregates in Xenopus oocyte nucleoli

    Michael H Hayes et al.
    The equilibrium between solubility and aggregation of proteins in the nucleus is controlled by co-aggregates like RNA and the action of ATP as both an energy source and a destabilizing chemical agent.
    1. Neuroscience

    Sound Processing: A new role for zinc in the brain

    Brendan B McAllister, Richard H Dyck
    Certain neurons in the auditory cortex release zinc to influence how the brain processes sounds.
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