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. 2020 Feb 3;10:1659. doi: 10.1038/s41598-020-57671-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Active center of jrPPO1-wt (PDB entry, 5CE9). The six conserved histidines coordinating CuA (His87, His108 and His117) and CuB (His239, His243 and His273) are highlighted as sticks. Cys91 forms a conserved thioether bridge (S-C) with His108. Moreover, the gatekeeper residue Phe260 (red), the 1^st activity controller Asn240 (cyan) and the 2^nd activity controller Leu244 (magenta) are depicted as sticks.