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. 2024 Jan 3;55:2. doi: 10.1186/s13567-023-01256-9

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© The Author(s) 2023

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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Sequence analysis of the DPV pac element with its homologues. A The pac1 motif at the S-terminus contained three characteristic regions, including an A/T-rich region in the middle of pac1 and two C-rich regions on both sides of the A/T-rich region. B The pac2 motif is located at the L-terminus and consists of three regions: the A-rich region, disordered Nn region and CG motif region.