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. 2018 Sep 24;46(20):11089–11098. doi: 10.1093/nar/gky863

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© The Author(s) 2018. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4. — The H2TH region of CtGEN1 bound to its resolution product with a bound Cs⁺ ion. Parallel-eye stereoscopic views are shown. ( A) The complete loop (cyan) showing the interaction with the active site. (B) The Cs⁺ binding site. (C) The interaction of the distal end of the H2TH loop with the active site. The Mg²⁺ ion (Mg, green) is the M2 ion of the active site. B and C show the 2F_o-F_c electron density map for the key components of the interactions.