22 results found
    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. 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. Evolutionary Biology

    The regulation of oocyte maturation and ovulation in the closest sister group of vertebrates

    Shin Matsubara et al.
    Oocyte maturation and ovulation in the sister group of vertebrates, Ciona intestinalis Type A, are triggered by Ci-VP, the Ciona homolog of a typical neruopeptide, vasopressin.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of large cargo transport into the nucleus

    Giulia Paci et al.
    Efficient nuclear transport of very large biomolecules, relevant for viral transport, scales non-linearly with size and its kinetics can be explained by a simple two-parameter energetic model.
    1. Developmental Biology
    2. Genetics and Genomics

    Gap junctions deliver malonyl-CoA from soma to germline to support embryogenesis in Caenorhabditis elegans

    Todd A Starich et al.
    Malonyl-CoA, the rate-limiting substrate for fatty acid synthesis, is produced in the soma and delivered through gap junctions to the germline to promote reproduction and coordinate it with nutritional status.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Contractile acto-myosin network on nuclear envelope remnants positions human chromosomes for mitosis

    Alexander JR Booth et al.
    Live-cell imaging shows that the contractile acto-myosin network on the nuclear envelope remnant positions chromosomes in early mitosis to ensure efficient and correct interactions between chromosomes and the mitotic spindle.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Alpha-satellite RNA transcripts are repressed by centromere–nucleolus associations

    Leah Bury et al.
    Single molecule FISH analysis defines the behavior of centromere-derived alpha-satellite transcripts in intact human cells and reveals a critical role for centromere-nucleolar contacts in repressing alpha-satellite transcription.
    1. Microbiology and Infectious Disease

    A divergent cyclin/cyclin-dependent kinase complex controls the atypical replication of a malaria parasite during gametogony and transmission

    Aurélia C Balestra et al.
    Multiple steps of the atypical cell cycles underlying Plasmodium gametogony are controlled by a divergent cyclin/cyclin-dependent complex.
    1. Neuroscience

    Distinct roles for innexin gap junctions and hemichannels in mechanosensation

    Denise S Walker, William R Schafer
    The innexin protein UNC-7, a homologue of vertebrate pannexins, plays a specific, gap junction-independent role in C. elegans mechanosensation.
    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.

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