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. 2007 Jun 29;35(14):4704–4714. doi: 10.1093/nar/gkm494

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© 2007 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. — ASL analogs of tRNA^Lys and their modified bases. (A and B) Secondary structure presentations and indicated tRNA positions of ASL-3 and ASL-C, respectively. (C) Notations and structures of modified ASL bases. U9 (mcm⁵s²U), A9 (ms²t⁶A) appear in human tRNA^Lys3, U8 (mnm⁵s²U) and A7 (t⁶A) in corresponding positions of E. coli tRNA^Lys and Ψ appears in both.