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. 2011 Dec 16;40(8):3723–3731. doi: 10.1093/nar/gkr1223

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© The Author(s) 2011. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4. — The linker between the two domains in Gln4(1–187) likely behaves as a hinge, is highly conserved and is important for tRNA binding. (A) Structure of Gln4(1–187) (red) superposed on TMGatB (light gray) and SAGatB (dark gray) by alignment of the tail domains. (B) Conservation of GlnRS NTD sequences, red-≥90%; blue-≥70%, with arrow at Gln4₁₈₇., aligned using Multialin (49). (C) Conserved residues are highlighted on Gln4(1–187) according to the color code in B with the NTD backbone shown in light grey. (D) Close contacts between W160 of the Gln4 NTD and other residues.