603 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Vasohibin1, a new mouse cardiomyocyte IRES trans-acting factor that regulates translation in early hypoxia

    Fransky Hantelys et al.
    In mouse cardiomyocytes, (lymph)angiogenic growth factors are induced during early hypoxia by a translational mechanism involving a new IRES trans-acting factor, vasohibin-1.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An unfolded protein-induced conformational switch activates mammalian IRE1

    G Elif Karagöz et al.
    ER-stress sensing mechanism of the unfolded protein response sensor/transducer IRE1 is conserved from yeast to mammals, where in mammals, unfolded protein binding to IRE1's ER lumenal domain is coupled to its oligomerization and activation through an allosteric conformational change.
    1. Biochemistry and Chemical Biology

    A dynamic RNA loop in an IRES affects multiple steps of elongation factor-mediated translation initiation

    Marisa D Ruehle et al.
    During initiation factor-independent RNA structure-driven translation initiation, a flexible RNA element drives the movement of a viral IRES through the ribosome's tRNA binding sites and promotes tRNA binding.
    1. Structural Biology and Molecular Biophysics

    A complex IRES at the 5'-UTR of a viral mRNA assembles a functional 48S complex via an uAUG intermediate

    Ritam Neupane et al.
    The ribosome bound structure of a new IRES reveals novel architecture features used by viruses to hijack cellular translation.
    1. Cell Biology

    Unstructured regions in IRE1α specify BiP-mediated destabilisation of the luminal domain dimer and repression of the UPR

    Niko Amin-Wetzel et al.
    Client protein-driven reversal of endoplasmic reticulum chaperone (BiP) mediated-repression is revealed as a principal component of the regulation of the unfolded protein response transducer IRE1 in cells.
    1. Cell Biology

    The unfolded protein response and endoplasmic reticulum protein targeting machineries converge on the stress sensor IRE1

    Diego Acosta-Alvear et al.
    The coordination of protein targeting to the endoplasmic reticulum and the unfolded protein response through the stress sensor IRE1 ensures quality control of the secreted and transmembrane proteomes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    In vitro FRET analysis of IRE1 and BiP association and dissociation upon endoplasmic reticulum stress

    Megan C Kopp et al.
    Quantitative FRET UPR induction assay is used to measure IRE1 and BIP association and dissociation by a variety of ER misfolded proteins and by an important BiP substrate-binding domain mutant, significantly enhancing the evidence for the allosteric UPR induction model.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    ICE1 promotes the link between splicing and nonsense-mediated mRNA decay

    Thomas D Baird et al.
    A whole-genome siRNA screen identifies ICE1 as a factor required for accurate sensing and quality control of mRNAs containing premature stop codons.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Translation initiation by the hepatitis C virus IRES requires eIF1A and ribosomal complex remodeling

    Zane A Jaafar et al.
    The hepatitis C virus IRES binds and remodels preassembled eukaryotic translation preinitiation complexes, using specific initiation factor protein within a "bacterial-like" mode of initiation that can function in both stressed and unstressed cells.
    1. Cell Biology
    2. Developmental Biology

    Transdifferentiation mediated tumor suppression by the endoplasmic reticulum stress sensor IRE-1 in C. elegans

    Mor Levi-Ferber et al.
    IRE-1 manipulates tumor cell identity to restore apoptosis sensitivity and suppress an aggressive germline tumor in C. elegans.

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