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. 2009 Jan 7;37(4):1202–1210. doi: 10.1093/nar/gkn1040

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© 2009 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — tRNAs used in this study. The GAC (valine) and GAA (phenylalanine) anticodons were transplanted into 12 different E. coli tRNA bodies (gray), where the tRNA body ‘X’ is defined as the tRNA sequence excluding the anticodon. The resulting 24 tRNA mutants could all be aminoacylated with phenylalanine by PheRS. The recognition elements for alanyl-tRNA synthetase (G2-C71, G3-U70) were introduced into the eight tRNAs (four different tRNA bodies, two anticodons) indicated by the asterisk to also permit aminoacylation with alanine.

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