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. 2016 Dec;22(12):1844–1858. doi: 10.1261/rna.056523.116

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© 2016 Bourbigot et al.; Published by Cold Spring Harbor Laboratory Press for the RNA Society

This article is distributed exclusively by the RNA Society for the first 12 months after the full-issue publication date (see http://rnajournal.cshlp.org/site/misc/terms.xhtml). After 12 months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at http://creativecommons.org/licenses/by-nc/4.0/.

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FIGURE 5. — Hydrogen bond networks. (A) Base triple involving C33:G78:C75 in the free-Mg²⁺ structure. (B) Zoom on A39, U40, and U68 residues in the free-Mg²⁺ structure. (C) Comparison of the U41 residue from Mg²⁺-free (dark blue) and Mg²⁺-bound structures (light blue). (D) Base triple involving A43:U66:U41 in the 3 mM Mg²⁺ model. Distances consistent with the formation of hydrogen bonds are displayed. Broken lines indicate possible hydrogen bonds.