323 results found
    1. Biochemistry and Chemical Biology

    The ribosomal protein Asc1/RACK1 is required for efficient translation of short mRNAs

    Mary K Thompson et al.
    Asc1/RACK1 promotes the translation of mRNAs associated with the translational closed loop complex, which have short open reading frames and encode proteins required for core metabolic processes.
    1. Chromosomes and Gene Expression

    Glutaminase 2 is a novel negative regulator of small GTPase Rac1 and mediates p53 function in suppressing metastasis

    Cen Zhang et al.
    The GLS2 enzyme suppresses cancer metastasis by interacting with the small GTPase Rac1 and inhibiting its activity.
    1. Structural Biology and Molecular Biophysics

    Rac1 GTPase activates the WAVE regulatory complex through two distinct binding sites

    Baoyu Chen et al.
    The cryo-electron microscopy structure of an assembly of the WAVE Regulatory Complex and its activator, the Rac GTPase, plus complementary biochemistry and biophysics, reveal a novel activation mechanism involving two distinct Rac binding sites.
    1. Neuroscience

    Alpha protocadherins and Pyk2 kinase regulate cortical neuron migration and cytoskeletal dynamics via Rac1 GTPase and WAVE complex in mice

    Li Fan et al.
    A general cytoplasmic signaling mechanism for the novel functions of diverse alpha protocadherins in cortical neuron migration and actin cytoskeletal dynamics as well as dendrite morphogenesis in the brain.
    1. Cancer Biology
    2. Cell Biology

    Rac1-mediated membrane raft localization of PI3K/p110β is required for its activation by GPCRs or PTEN loss

    Onur Cizmecioglu et al.
    A unique two-step mechanism of plasma membrane recruitment and activation governs G-protein-coupled receptor mediated PI3K signaling.
    1. Cell Biology
    2. Developmental Biology

    Regulation of cell protrusions by small GTPases during fusion of the neural folds

    Ana Rolo et al.
    The completion of neural tube closure requires small GTPase-regulated membrane protrusions from non-neural ectoderm cells at the tips of the neural folds.
    1. Cancer Biology
    2. Cell Biology

    Rho-associated kinase (ROCK) function is essential for cell cycle progression, senescence and tumorigenesis

    Sandra Kümper et al.
    The Rho kinases ROCK1 and 2 act redundantly in regulating cell proliferation and their depletion causes cellular senescence.
    1. Structural Biology and Molecular Biophysics

    Calcium-driven regulation of voltage-sensing domains in BK channels

    Yenisleidy Lorenzo-Ceballos et al.
    Gating currents analysis at different Ca2+ concentrations of BK channels reveals a strong allosteric coupling between Ca2+- and voltage-sensing modules via equivalent contributions exerted by the RCK1 and RCK2 Ca2+-sites.
    1. Cell Biology
    2. Neuroscience

    Action potential-coupled Rho GTPase signaling drives presynaptic plasticity

    Shataakshi Dube O'Neil et al.
    Proteomic and genetic analysis discovers a new cytoskeletal mechanism of presynaptic short-term plasticity common across neuronal cell types.
    1. Cell Biology
    2. Computational and Systems Biology

    Periodic propagating waves coordinate RhoGTPase network dynamics at the leading and trailing edges during cell migration

    Alfonso Bolado-Carrancio et al.
    Different RhoA and Rac1 dynamics at the cell front and rear are coordinated through periodic GTPase waves, which define the minimal autonomous biochemical machinery necessary and sufficient for cell migration.

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