1,356 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM visualization of the ribosome in termination complex with apo-RF3 and RF1

    Jesper Pallesen, Yaser Hashem ... Joachim Frank
    Cryo-electron microscopy has been used to provide a structural interpretation of the complete action cycle of release factor 3 during translation termination, which includes a coordinated sequence of interactions with a class-I release factor and the ribosome.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Extensive ribosome and RF2 rearrangements during translation termination

    Egor Svidritskiy, Gabriel Demo ... Andrei A Korostelev
    Ensemble cryo-EM visualizes how structural rearrangements poise the newly made protein and release factor RF2 to dissociate in preparation for ribosome recycling.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Dynamics of ribosomes and release factors during translation termination in E. coli

    Sarah Adio, Heena Sharma ... Marina V Rodnina
    Translation termination is a stochastic process that utilizes loosely coupled motions of its players to complete protein synthesis and release the newly synthesized nascent chain toward its cellular destination.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of ribosome rescue by ArfA and RF2

    Gabriel Demo, Egor Svidritskiy ... Andrei A Korostelev
    Cryo-EM structures reveal the structural dynamics of ArfA*RF2-mediated rescue of stalled ribosomes.
    1. Biochemistry and Chemical Biology

    Cryo-EM structures reveal that RFC recognizes both the 3′- and 5′-DNA ends to load PCNA onto gaps for DNA repair

    Fengwei Zheng, Roxana Georgescu ... Michael E O'Donnell
    Cryo-EM shows a 5’ DNA site on the RFC clamp loader, in addition to the 3’ site, and biochemical study shows the 5’ site facilitates PCNA loading onto gaps, consistent with genetics indicating the 5’ DNA site facilitates gap repair.
    1. Microbiology and Infectious Disease

    HIV-1 Vpr antagonizes innate immune activation by targeting karyopherin-mediated NF-κB/IRF3 nuclear transport

    Hataf Khan, Rebecca P Sumner ... Greg J Towers
    HIV-1 Vpr antagonises innate immune sensing of viral and non-viral stimuli by preventing activated IRF3 and NF-κB nuclear transport.
    1. Computational and Systems Biology
    2. Neuroscience

    Stochastic and deterministic dynamics of intrinsically irregular firing in cortical inhibitory interneurons

    Philipe RF Mendonça, Mariana Vargas-Caballero ... Hugh PC Robinson
    A-type potassium conductances influence the distinctive firing behaviour of irregular-spiking interneurons.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular basis for catabolism of the abundant metabolite trans-4-hydroxy-L-proline by a microbial glycyl radical enzyme

    Lindsey RF Backman, Yolanda Y Huang ... Catherine L Drennan
    The common post-translational modification trans-4-hydroxy-L-proline is reversed by gut microbes with the help of hydroxyproline dehydratase (HypD), an enzyme that performs a radical chemical mechanism.
    1. Computational and Systems Biology
    2. Epidemiology and Global Health

    National Institutes of Health research project grant inflation 1998 to 2021

    Michael S Lauer, Joy Wang, Deepshikha Roychowdhury
    National Institutes of Health (NIH) grants have evolved over time, with a greater proportion of funds going to solicited projects, but inflation-adjusted costs have remained relatively stable following a brief increase during the NIH-doubling (1998-2003).
    1. Structural Biology and Molecular Biophysics

    A second DNA binding site on RFC facilitates clamp loading at gapped or nicked DNA

    Xingchen Liu, Christl Gaubitz ... Brian A Kelch
    Structural, biochemical, and cellular data reveal the mechanism by which the clamp loader attaches sliding clamps at gapped and nicked DNA to support DNA damage repair.

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