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. 2020 Mar 2;10:3797. doi: 10.1038/s41598-020-60733-9

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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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Domain architecture of various PB1 domain containing proteins across the five eukaryotic kingdoms. Classes of PB1-containing proteins found in Animalia (A), Protozoa (B), Chromista (C), Fungi (D) and Plantae (E). DBD in (E) represents the DNA binding domain, which is a combination of both B3 and dimerization domain (DD). Abbreviations and the corresponding InterPro database link to all the domains are provided in Supplementary Table S1. PB1 domains that are identified in only one sequence and/or one species are provided in the Supplementary Fig. S1.