Repurposing tRNAs for nonsense suppression
نویسندگان
چکیده
منابع مشابه
Ataluren stimulates ribosomal selection of near-cognate tRNAs to promote nonsense suppression.
A premature termination codon (PTC) in the ORF of an mRNA generally leads to production of a truncated polypeptide, accelerated degradation of the mRNA, and depression of overall mRNA expression. Accordingly, nonsense mutations cause some of the most severe forms of inherited disorders. The small-molecule drug ataluren promotes therapeutic nonsense suppression and has been thought to mediate th...
متن کاملNonsense suppression by near-cognate tRNAs employs alternative base pairing at codon positions 1 and 3.
Premature termination codons (PTCs) in an mRNA ORF inactivate gene function by causing production of a truncated protein and destabilization of the mRNA. Readthrough of a PTC allows ribosomal A-site insertion of a near-cognate tRNA, leading to synthesis of a full-length protein from otherwise defective mRNA. To understand the mechanism of such nonsense suppression, we developed a yeast system t...
متن کاملNonsense suppression in archaea.
Bacterial strains carrying nonsense suppressor tRNA genes played a crucial role in early work on bacterial and bacterial viral genetics. In eukaryotes as well, suppressor tRNAs have played important roles in the genetic analysis of yeast and worms. Surprisingly, little is known about genetic suppression in archaea, and there has been no characterization of suppressor tRNAs or identification of ...
متن کاملInteraction of nonsense suppressor tRNAs and codon nonsense mutations or termination codons
Codon nonsense mutations include amber, ochre, or opal mutations according to termination codon consisting of three types (TAG, TAA and TGA). Codon nonsense mutations are also divided into natural and artificial mutations. We discussed the interaction of codon nonsense mutations and suppressor tRNAs in vitro and in vivo. Nonsense suppressions do not only happen in prokaryotes but also in eukary...
متن کاملNonsense mRNA suppression via nonstop decay
Nonsense-mediated mRNA decay is the process by which mRNAs bearing premature stop codons are recognized and cleared from the cell. While considerable information has accumulated regarding recognition of the premature stop codon, less is known about the ensuing mRNA suppression. During the characterization of a second, distinct translational surveillance pathway (nonstop mRNA decay), we trapped ...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2021
ISSN: 2041-1723
DOI: 10.1038/s41467-021-24076-x