Recent structural and biochemical experiments indicate that bacterial elongation factor Tu and the ribosomal A-site show specificity for both the amino acid and the tRNA portions of their aminoacyl-tRNA (aa-tRNA) substrates. These data are inconsistent with the traditional view that tRNAs are generic adaptors in translation. We hypothesize that each tRNA sequence has co-evolved with its cognate amino acid, such that all aa-tRNAs are translated uniformly.
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| http://dx.doi.org/10.1016/j.tibs.2005.10.006 | DOI Listing |
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