83 results found
    1. Microbiology and Infectious Disease

    Phage tRNAs evade tRNA-targeting host defenses through anticodon loop mutations

    Daan F van den Berg, Baltus A van der Steen ... Stan JJ Brouns
    A new perspective on the 50-year old mystery of why phages encode their own tRNAs.
    Short Report Updated
    Formats available:
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    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insights into mRNA reading frame regulation by tRNA modification and slippery codon–anticodon pairing

    Eric D Hoffer, Samuel Hong ... Christine M Dunham
    Chemical modifications near the tRNA anticodon and specific mRNA–tRNA pairs combine to control the ribosomal three-nucleotide mRNA reading frame, essential for the sequential addition of amino acids into polypeptide chains.
    1. Cell Biology
    2. Evolutionary Biology

    tRNA genes rapidly change in evolution to meet novel translational demands

    Avihu H Yona, Zohar Bloom-Ackermann ... Yitzhak Pilpel
    Experimental evolution and systematic sequence analysis of transfer RNA genes reveal that anticodon mutations provide adaptive plasticity to the translation machinery.
    1. Biochemistry and Chemical Biology

    Measuring the tolerance of the genetic code to altered codon size

    Erika Alden DeBenedictis, Dieter Söll, Kevin M Esvelt
    Although the genetic code uses three DNA base pairs to encode one amino acid, it is surprisingly tolerant to four-base codons, which can be used to incorporate nine of the twenty amino acids without any protein engineering.
    1. Structural Biology and Molecular Biophysics

    Specific structural elements of the T-box riboswitch drive the two-step binding of the tRNA ligand

    Jiacheng Zhang, Bhaskar Chetnani ... Jingyi Fei
    The glycine T-box riboswitch recognizes tRNAgly and senses its aminoacylation state by first interacting with the anticodon region and subsequently probing the 3' end of the ligand using both specific structural elements and conformational dynamics.
    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, Aneeshkumar G Arimbasseri ... Richard J Maraia
    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

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

    Erica N Thomas, Kyusik Q Kim ... Hani S Zaher
    Alkylation stress modify mRNAs and results in translation arrest, which activates the ribosome-rescue pathway of trans translation in bacteria.
    1. Microbiology and Infectious Disease

    Loss of N1-methylation of G37 in tRNA induces ribosome stalling and reprograms gene expression

    Isao Masuda, Jae-Yeon Hwang ... Ya-Ming Hou
    Biochemical and genome-wide analysis demonstrates that m1G37 is important for tRNA aminoacylation and for the entire elongation cycle of protein synthesis.
    1. Chromosomes and Gene Expression

    The β-hairpin of 40S exit channel protein Rps5/uS7 promotes efficient and accurate translation initiation in vivo

    Jyothsna Visweswaraiah, Yvette Pittman ... Alan G Hinnebusch
    A structural element of mRNA exit channel protein Rps5 performs a critical role in start codon recognition during translation initiation by stabilizing initiator tRNA binding to the pre-initiation complex.

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