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. 2022 Apr 18;37(1):1083–1097. doi: 10.1080/14756366.2022.2061965

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© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

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

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Figure 9. — The most important interactions of the protein with ligands in the H. pylori PNP complexes with 6BnS-2Cl-Pu (A), 6BnO-2Cl-Pu (B), 6BnS-Pu (C), and 2,6-diCl-Pu (D). Interactions of ligands under 3.5 Å in length are depicted, hydrogen bonds are shown in yellow, close contacts in blue, and C-H…π interactions are shown in grey. It is visible that in structures with 6BnS-2Cl-Pu and 6BnO-2Cl-Pu purine ring is oriented in such a way that the five-membered ring is closer to the viewer, while in the two remaining structures the purine ring is flipped.