Innate immune and chemically triggered oxidative stress modifies translational fidelity.
2009
Accurate transfer RNA (tRNA) aminoacylation is necessary for translational fidelity; however, the accuracy of tRNA aminoacylation in vivo is uncertain. In mammalian cells, approximately 1% of methionine residues used in protein synthesis are now shown to be aminoacylated to non-methionyl-tRNAs. Furthermore, misacylation of methionine increases up to tenfold upon exposing cells to viruses, toll-like receptor ligands or oxidative stress.
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