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. 2021 Jun 13;13(6):1139. doi: 10.3390/v13061139

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Genome organization of accessory genes from several representative coronaviruses. SARS-CoVs, severe acute respiratory syndrome coronaviruses; MERS-CoV, Middle Eastern respiratory syndrome coronavirus; HCoV-229E, human coronavirus 229E; HCoV-OC43, human coronavirus OC43; PEDV, porcine epidemic diarrhea virus; TGEV, transmissible gastroenteritis virus; MHV, mouse hepatitis virus; FIPV, feline infectious peritonitis virus; IBV, infectious bronchitis virus; BuCoV, bulbul coronavirus; PDCoV, porcine deltacoronavirus. Various accessory genes are shown as different colored boxes. ORFs 1a and 1b comprise the coronaviruses replicase genes. S, E, M, and N represent viral structural proteins. The figure is not drawn to scale.