1,187 results found
    1. Immunology and Inflammation

    Ribosome biogenesis restricts innate immune responses to virus infection and DNA

    Christopher Bianco, Ian Mohr
    Ribosome production is unexpectedly integrated into innate cell-intrinsic responses that regulate double strand DNA-sensing and inflammatory cytokine induction in infected and uninfected cells.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Eukaryotic translation initiation factor 3 plays distinct roles at the mRNA entry and exit channels of the ribosomal preinitiation complex

    Colin Echeverría Aitken et al.
    Eukaryotic translation initiation factor 3 (eIF3) is required to stabilize the binding of mRNA at the exit channel of the small ribosomal subunit and acts at the entry channel to accelerate mRNA recruitment to the translation preinitiation complex.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    mRNA stem-loops can pause the ribosome by hindering A-site tRNA binding

    Chen Bao et al.
    By sterically hindering tRNA binding and inhibiting translation elongation, mRNA stem-loops can modulate gene expression.
    1. Biochemistry and Chemical Biology

    Alkylative damage of mRNA leads to ribosome stalling and rescue by trans translation in bacteria

    Erica N Thomas et al.
    Alkylation stress modify mRNAs and results in translation arrest, which activates the ribosome-rescue pathway of trans translation in bacteria.
    1. Biochemistry and Chemical Biology

    LARP4 mRNA codon-tRNA match contributes to LARP4 activity for ribosomal protein mRNA poly(A) tail length protection

    Sandy Mattijssen et al.
    The messenger RNA encoding La-related protein-4 (LARP4) contains a short region of instability whose codon clusters are sensitive to low abundance tRNAs that when elevated increase LARP4 activity for poly(A) lengthening of ribosomal protein mRNAs and other mRNAs.
    1. Biochemistry and Chemical Biology

    Delayed inhibition mechanism for secondary channel factor regulation of ribosomal RNA transcription

    Sarah K Stumper et al.
    Single-molecule observations reveal a mechanism that may be used by multiple competing regulatory proteins to control ribosomal RNA production during rapid bacterial cell growth.
    1. Cell Biology

    Autophagy-dependent ribosomal RNA degradation is essential for maintaining nucleotide homeostasis during C. elegans development

    Yubing Liu et al.
    Embryonic development requires autophagy-dependent degradation of ribosomal RNAs.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Distinct stages of the translation elongation cycle revealed by sequencing ribosome-protected mRNA fragments

    Liana F Lareau et al.
    The size of the mRNA fragment protected by a ribosome depends on the ribosome's conformation, which enables studies of the distinct steps of decoding and translocation at single-codon resolution.
    1. Structural Biology and Molecular Biophysics

    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

    Regulated Ire1-dependent mRNA decay requires no-go mRNA degradation to maintain endoplasmic reticulum homeostasis in S. pombe

    Nicholas R Guydosh et al.
    A critical component of the cellular response to unfolded proteins is the widespread rescue of ribosomes that stall on endonucleolytically-cleaved mRNA transcripts.

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