491 results found
    1. Biochemistry and Chemical Biology

    Structure and reconstitution of yeast Mpp6-nuclear exosome complexes reveals that Mpp6 stimulates RNA decay and recruits the Mtr4 helicase

    Elizabeth V Wasmuth et al.
    The nuclear exosome cofactors Mpp6 and Rrp47 can stimulate exoribonuclease activities of the nuclear RNA exosome and recruit the Mtr4 helicase to promote helicase dependent RNA decay.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct and evolutionary conserved structural features of the human nuclear exosome complex

    Piotr Gerlach et al.
    Cryo-EM structure and biochemical characterization of the human nuclear exosome reveals its specific properties with respect to the yeast complex, underscoring the evolutionary conservation of the RNA-channeling mechanisms and hMTR4 helicase recruitment.
    1. Computational and Systems Biology

    A molecular view on the escape of lipoplexed DNA from the endosome

    Bart MH Bruininks et al.
    The molecular insight in lipoplex transfection mechanisms helps in the development of efficient and affordable gene delivery systems.
    1. Chromosomes and Gene Expression

    Condensin controls cellular RNA levels through the accurate segregation of chromosomes instead of directly regulating transcription

    Clémence Hocquet et al.
    Contrary to the generally accepted model, condensin maintains proper gene expression by promoting the accurate segregation of chromosomes and the partitioning of the RNA-exosome throughout mitosis, instead of directly regulating transcription.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Y-box protein 1 is required to sort microRNAs into exosomes in cells and in a cell-free reaction

    Matthew J Shurtleff et al.
    A cell-free reaction that reconstitutes the selective sorting of a miRNA into exosomes reveals an RNA-binding protein, YBX1, as a critical sorting factor.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    A FYVE zinc finger domain protein specifically links mRNA transport to endosome trafficking

    Thomas Pohlmann et al.
    An endosomal component employs a novel PAM2-like motif to recruit a key RNA-binding protein, which explains how mRNAs and associated ribosomes are attached to endosomes during coupled transport.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    A conserved RNA degradation complex required for spreading and epigenetic inheritance of heterochromatin

    Gergana Shipkovenska et al.
    Genetic and biochemical studies show that a conserved ribosome biogenesis complex also localizes to heterochromatin, where it triggers RNA degradation and promotes the spreading and epigenetic inheritance of histone methylation.
    1. Cell Biology

    Genome-wide interrogation of extracellular vesicle biology using barcoded miRNAs

    Albert Lu et al.
    A screen using artificially barcoded, exosomal microRNAs, paired with CRISPR guide RNAs, helped identify new players in multivesicular endosome exocytosis and a role for Wnt signaling.
    1. Cancer Biology

    KRAS-dependent sorting of miRNA to exosomes

    Diana J Cha et al.
    In isogenically matched colorectal cancer (CRC) cell lines, mutant KRAS alters the composition of secreted miRNAs in extracellular vesicles that can then transfer repressive activity to wild type cells.
    1. Cell Biology

    Exosome complex orchestrates developmental signaling to balance proliferation and differentiation during erythropoiesis

    Skye C McIver et al.
    An RNA-regulatory machine confers expression and function of a receptor tyrosine kinase to dictate a developmental signaling transition.

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