46 results found
    1. Microbiology and Infectious Disease

    HIV-1 Vpr induces cell cycle arrest and enhances viral gene expression by depleting CCDC137

    Fengwen Zhang, Paul D Bieniasz
    A key target of the HIV-1 Vpr accessory protein is identified, whose depletion causes increased HIV-1gene expression and cell cycle arrest.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The vacuolar-ATPase complex and assembly factors, TMEM199 and CCDC115, control HIF1α prolyl hydroxylation by regulating cellular iron levels

    Anna L Miles et al.
    An unbiased genome-wide human forward genetic screen identifies the vacuolar ATPase complex and assembly factors as regulators of HIF stability through their actions on intracellular iron metabolism.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Guanidine hydrochloride reactivates an ancient septin hetero-oligomer assembly pathway in budding yeast

    Courtney R Johnson et al.
    A naturally-occurring small molecule acts as a chemical chaperone in vivo to alter the folding of a budding yeast septin and promote an oligomerization pathway that was lost during evolution.
    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.
    1. Cell Biology

    Cross-compartment signal propagation in the mitotic exit network

    Xiaoxue Zhou et al.
    The mitotic exit network signals from spindle pole bodies to the nucleolus through the dynamic localization of its terminal kinase complex Dbf2-Mob1.
    1. Cell Biology
    2. Developmental Biology

    Centriolar satellites assemble centrosomal microcephaly proteins to recruit CDK2 and promote centriole duplication

    Andrew Kodani et al.
    To control centriole duplication, centriolar satellite proteins assemble a microcephaly-associated protein complex at the centrosome and activate cyclin-dependent kinase 2.
    1. Immunology and Inflammation

    A population of innate myelolymphoblastoid effector cell expanded by inactivation of mTOR complex 1 in mice

    Fei Tang et al.
    A novel population of hematopoietic cells unmasked by mTORC1 inactivation reveals a new mechanism of innate immune tolerance and a new consequence of defective hematopoiesis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The role of Cdc42 and Gic1 in the regulation of septin filament formation and dissociation

    Yashar Sadian et al.
    Imaging with electron microscopy and cryo-electron tomography reveals that competition between Cdc42 and Gic1 for the same subunit within septins controls the formation and breakdown of septin filaments.
    1. Cell Biology

    Nanoscale architecture of the Schizosaccharomyces pombe contractile ring

    Nathan A McDonald et al.
    Super-resolution microscopy reveals the nanoscale molecular architecture of 29 protein components of a eukaryotic contractile ring relative to the membrane.
    1. Cell Biology

    A novel checkpoint pathway controls actomyosin ring constriction trigger in fission yeast

    Tomás Edreira et al.
    In fission yeast cell wall stress triggers a cytokinesis blockage specifically in the onset of actomyosin ring constriction.

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