6,782 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Extensive cargo identification reveals distinct biological roles of the 12 importin pathways

    Makoto Kimura et al.
    Transport-based high-throughput identification of cargo proteins specific to all 12 human importin-β family nuclear import receptors revealed biological processes that the cargo cohorts of each receptor are involved in.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A RanGTP-independent mechanism allows ribosomal protein nuclear import for ribosome assembly

    Sabina Schütz et al.
    The Tsr2 carrier protein connects the nuclear import machinery with the ribosome assembly pathway.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Importin-β modulates the permeability of the nuclear pore complex in a Ran-dependent manner

    Alan R Lowe et al.
    The Ran GTPase plays a role in defining the physical properties of the nuclear pore complex transport channel by remodeling the binding interactions of importin-β with the nucleoporin Nup153 at the nuclear face of the pore.
    1. Cell Biology
    2. Plant Biology

    Multi-functional roles for the polypeptide transport associated domains of Toc75 in chloroplast protein import

    Yamuna D Paila et al.
    The conserved polypeptide transport associated (POTRA) domains of the protein import channel, Toc75, are essential for protein import into chloroplasts.
    1. Biochemistry and Chemical Biology

    Mia40 is a trans-site receptor that drives protein import into the mitochondrial intermembrane space by hydrophobic substrate binding

    Valentina Peleh et al.
    The import of proteins into the intermembrane space of mitochondria is driven by binding to the trans-site receptor Mia40 and not by the oxidation of cysteine residues.
    1. Cell Biology

    Cytosolic Hsp70 and co-chaperones constitute a novel system for tRNA import into the nucleus

    Akira Takano et al.
    A major cytoplasmic chaperone, Ssa2p, acts as a nuclear import carrier for tRNAs upon nutrient starvation in Saccharomyces cerevisiae.
    1. Structural Biology and Molecular Biophysics

    Importin-9 wraps around the H2A-H2B core to act as nuclear importer and histone chaperone

    Abhilash Padavannil et al.
    In an unusual complex that is not dissociated by RanGTP alone, Importin-9 sequesters the H2A-H2B core from promiscuous interactions.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Role of Tim17 in coupling the import motor to the translocation channel of the mitochondrial presequence translocase

    Keren Demishtein-Zohary et al.
    First two transmembrane segments of Tim17 are involved in interaction with the channel and the second two with the motor of the presequence translocase suggesting how proteins are handed over during their translocation into mitochondria.
    1. Biochemistry and Chemical Biology

    Convergent Evolution: Shaping the import system of mitochondria

    Kostas Tokatlidis
    Evidence is accumulating that unrelated species have independently evolved the same way of importing proteins in their mitochondria.
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    1. Cell Biology

    Exportin Crm1 is repurposed as a docking protein to generate microtubule organizing centers at the nuclear pore

    Xun X Bao et al.
    Microtubule nucleation from the nuclear envelope in fission yeast involves repurposing of nuclear export proteins for a non-export-related function, docking cytoplasmic proteins at nuclear pore complexes.

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