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. 2018 Jul 24;8:11171. doi: 10.1038/s41598-018-29560-x

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© The Author(s) 2018

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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Organization of arterivirus genomes (updated from³). Arterivirus open reading frames (ORFs) are drawn to scale. ORFs 1a and 1b can be joined through a −1 programmed ribosomal frameshift to express polyprotein 1a,b. Nonstructural protein 2 transframe fusion product (nsp2TF) is produced through a −2 programmed ribosomal frameshift by most, but not all, arteriviruses. The plot at the bottom of the figure shows the predicted organization of this TF as a transmembrane domain in the case of OSV-1. This plot was made using TMHMM server v2.0 (http://www.cbs.dtu.dk/services/TMHMM/). WPDV, wobbly possum disease virus (GenBank #JN116253); EAV, equine arteritis virus (NC_002532); APRAV-1, African pouched rat virus 1 (NC_026439.1); LaDV-1/2, lactate dehydrogenase-elevating virus 1 and 2 (NC_001639 and L13298.1); PRRSV-1/2, porcine reproductive and respiratory syndrome viruses 1 and 2 (M96262 and NC_001961); RatAV-1, rat arterivirus 1 (NC028963); DeBMV-1, DeBrazza’s monkey virus 1 (NC_026509); DMVV-1; Drakensberg Mountain vervet virus 1 (NC_029992); KKCBV-1, Kafue kinda-chacma baboon virus 1 (NC029053); KRCV-1/2, Kibale red colobus viruses 1 and 2 (HQ845737 and KC787631.1); KRTGV-1/2, Kibale red-tailed guenon viruses 1 and 2 (JX473849 and JX473847); MYBV-1, Mikumi yellow baboon virus 1 (NC_025112.1); PBJV, Pebjah virus (KR139838); SHEV, simian hemorrhagic encephalitis virus (KM677927); SHFV, simian hemorrhagic fever virus (NC_003092); SWBV-1, Southwest baboon virus 1 (NC_025113.1); ZMbV-1, Zambian malbrouck virus 1 (KT166441); OSV-1, Olivier’s shrew virus 1 (MF324848). Four additional murid porarteviruses that have not yet been described are identified by GenBank accession numbers only.