365 results found
    1. Biophysics and Structural Biology

    Ribosome•RelA structures reveal the mechanism of stringent response activation

    Anna B Loveland et al.
    Cryo-EM structures of 70S•RelA ribosome complexes reveal how cognate deacyl-tRNA activates RelA.
    1. Cell Biology

    Spatial sequestration and detoxification of Huntingtin by the ribosome quality control complex

    Junsheng Yang et al.
    A genome-wide screen in yeast reveals that key proteins in ribosome quality control also regulate mutant Huntingtin aggregation and toxicity.
    1. Biophysics and Structural Biology

    Mechanisms of ribosome stalling by SecM at multiple elongation steps

    Jun Zhang et al.
    Nascent regulatory peptides tune the translation rate through a continuous, dynamic reshaping of the functional center of the ribosome.
    1. Biochemistry
    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. Biochemistry
    2. Microbiology and Infectious Disease

    Discovery of a small molecule that inhibits bacterial ribosome biogenesis

    Jonathan M Stokes et al.
    The anticonvulsant drug lamotrigine inhibits bacterial ribosome biogenesis and reveals an unexplored role for initiation factor 2 (IF2) in ribosome assembly.
    1. Biochemistry
    2. Biophysics and Structural Biology

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

    Jesper Pallesen et al.
    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. Biochemistry
    2. Cell Biology

    Cdc48/p97 promotes degradation of aberrant nascent polypeptides bound to the ribosome

    Rati Verma et al.
    The enzyme that collaborates with ubiquitin ligases to promote the release of defective polypeptides from stalled ribosomes in a process named ribosome-associated degradations has been identified as the ATPase Cdc48.
    1. Biochemistry
    2. Cell Biology

    The Rqc2/Tae2 subunit of the ribosome-associated quality control (RQC) complex marks ribosome-stalled nascent polypeptide chains for aggregation

    Ryo Yonashiro et al.
    Rqc2-mediated modification of ribosome-stalled nascent chains with "CAT tails" promotes formation of insoluble aggregates suggesting that proteins can become specifically marked for aggregation.
    1. Biophysics and Structural Biology

    Cryo-EM structure of the Plasmodium falciparum 80S ribosome bound to the anti-protozoan drug emetine

    Wilson Wong et al.
    The molecular mechanism behind how emetine inhibits the ribosome of the human malaria parasite, along with structural details of the complex formed, is revealed at high resolution using cryo-electron microscopy.
    1. Biochemistry

    Prefabrication of a ribosomal protein subcomplex essential for eukaryotic ribosome formation

    Cohue Peña et al.
    The ATPase Fap7 prefabricates a uS11:eS26 ribosomal protein complex for ribosome assembly.

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