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. 2021 May 4;11:9453. doi: 10.1038/s41598-021-88672-z

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Elizabethkingia anophelis chloramphenicol acetyltransferase (CatB) protein structure. (A) Topology map. Cyan arrows indicate beta strands, red cylinders indicate 3/10 alpha helices, yellow cylinders represent alpha helices, and lines between shapes represent loops. The N-terminus is shown in pink and the C-terminus is in yellow. (B) Tertiary structure of a single monomer. Each domain is coloured as in (A). (C) Trimeric quaternary structure.