2,158 results found
    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, Vera P Pisareva ... Israel S Fernández
    The ribosome bound structure of a new IRES reveals novel architecture features used by viruses to hijack cellular translation.
    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, Anne-Claire Godet ... Anne-Catherine Prats
    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

    Ensemble cryo-EM uncovers inchworm-like translocation of a viral IRES through the ribosome

    Priyanka D Abeyrathne, Cha San Koh ... Andrei A Korostelev
    An ensemble of cryo-EM structures reveals how eukaryotic elongation factor 2 positions the first codon of a viral mRNA for translation.
    1. Biochemistry and Chemical Biology

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

    Marisa D Ruehle, Haibo Zhang ... Jeffrey S Kieft
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An unfolded protein-induced conformational switch activates mammalian IRE1

    G Elif Karagöz, Diego Acosta-Alvear ... Peter Walter
    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
    2. Microbiology and Infectious Disease

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

    Zane A Jaafar, Akihiro Oguro ... Jeffrey S Kieft
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Dual tRNA mimicry in the Cricket Paralysis Virus IRES uncovers an unexpected similarity with the Hepatitis C Virus IRES

    Vera P Pisareva, Andrey V Pisarev, Israel S Fernández
    A conformational change in the Cricket Paralysis Virus IRES upon double translocation in the ribosome uncovers an unexpected similarity with the Hepatitis C Virus IRES.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Neuroprotective effects of TRPA1 channels in the cerebral endothelium following ischemic stroke

    Paulo Wagner Pires, Scott Earley
    Acute hypoxia activates TRPA1 channels in cerebral artery endothelial cells to activate an early adaptive response to reduce tissue ischemic damage through vasodilation.
    1. Biochemistry and Chemical Biology

    Kinetics of initiating polypeptide elongation in an IRES-dependent system

    Haibo Zhang, Martin Y Ng ... Barry S Cooperman
    The retarding effect of a ribosome-bound internal ribosome entry site on eukaryotic protein synthesis is largely overcome following translocation of tripeptidyl-tRNA.
    1. Neuroscience

    Low-noise encoding of active touch by layer 4 in the somatosensory cortex

    Samuel Andrew Hires, Diego A Gutnisky ... Karel Svoboda
    Touch information is represented with minimal noise in the somatosensory cortex during tactile exploration.

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