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    1. Cell Biology
    2. Immunology and Inflammation

    Calcium influx through CRAC channels controls actin organization and dynamics at the immune synapse

    Catherine A Hartzell et al.
    By restricting actin polymerization to the perimeter of the immune synapse and promoting depolymerization, calcium influx drives centripetal actin flow, which confines CRAC channels and the endoplasmic reticulum to the synapse center.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Competition between Tropomyosin, Fimbrin, and ADF/Cofilin drives their sorting to distinct actin filament networks

    Jenna R Christensen et al.
    Both cooperative and competitive associations of actin binding proteins with actin filaments help drive the self-organization of functionally diverse F-actin networks in fission yeast.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Coordinated recruitment of Spir actin nucleators and myosin V motors to Rab11 vesicle membranes

    Olena Pylypenko et al.
    Components of a Spir:MyoV:Rab11 complex are recruited synergistically to coordinate actin tracks generation and myosin motor activity in vesicle transport processes.
    1. Developmental Biology
    2. Neuroscience

    TIAM-1/GEF can shape somatosensory dendrites independently of its GEF activity by regulating F-actin localization

    Leo TH Tang et al.
    The DMA-1/LRR-TM cell surface receptor signals through partially redundant pathways to cell-autonomously pattern dendrites, including by directly forming a complex with both the TIAM-1/GEF and ACT-4/Actin.
    1. Cell Biology

    Yeast Eps15-like endocytic protein Pan1p regulates the interaction between endocytic vesicles, endosomes and the actin cytoskeleton

    Junko Y Toshima et al.
    Phosphorylation of the Eps15-like protein Pan1p regulates how endocytic compartments interact with each other and with the actin cytoskeleton.
    1. Plant Biology

    Arabidopsis formin 2 regulates cell-to-cell trafficking by capping and stabilizing actin filaments at plasmodesmata

    Min Diao et al.
    Cytological and biochemical analyses reveal Arabidopsis formin 2 is involved in regulating PD permeability by anchoring actin filaments to PD and stabilizing them through actin filament barbed end capping activity.
    1. Cell Biology
    2. Neuroscience

    Structural plasticity of actin-spectrin membrane skeleton and functional role of actin and spectrin in axon degeneration

    Guiping Wang et al.
    Neurotrophin deprivation leads to rapid caspase-independent disassembly of the actin-spectrin-based membrane skeleton and spectrin-dependent retrograde signaling in axon degeneration.
    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 corticostriatal deficit promotes temporal distortion of automatic action in ageing

    Miriam Matamales et al.
    Acquisition of behavioral sequences in normally aged mice involves short and unusually fast patterns of action, some of which are reproduced by striatal circuitry manipulations in young mice and can be transitorily restored through action-related feedback.
    1. Biochemistry and Chemical Biology

    SETD3 protein is the actin-specific histidine N-methyltransferase

    Sebastian Kwiatkowski et al.
    Histone-lysine N-methyltransferase SETD3 (NP_115609.2) was identified as the actin-specific histidine N-methyltransferase, an enzyme catalyzing the extremely well-conserved methylation of H73 in β-actin.