{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T00:47:44Z","timestamp":1778546864393,"version":"3.51.4"},"reference-count":68,"publisher":"American Society for Microbiology","issue":"16","license":[{"start":{"date-parts":[[2020,7,30]],"date-time":"2020-07-30T00:00:00Z","timestamp":1596067200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"name":"Key Research & Development Program of China","award":["2016YFD0500102"],"award-info":[{"award-number":["2016YFD0500102"]}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Virol"],"published-print":{"date-parts":[[2020,7,30]]},"abstract":"<jats:p>Coronaviruses (CoVs) include a wide range of important human and animal pathogens. Examples of human CoVs include severe acute respiratory syndrome coronavirus (SARS-CoV-1), Middle East respiratory syndrome coronavirus (MERS-CoV), and the most recently emerged SARS-CoV-2. Examples of pig CoVs include porcine epidemic diarrhea virus (PEDV), porcine deltacoronavirus (PDCoV), and swine enteric alphacoronavirus (SeACoV). There are no vaccines or antiviral drugs for most of these viruses. All known CoVs encode a bifunctional nsp14 protein which possesses ExoN and guanine-N-7 methyltransferase (G-N-7 MTase) activities, responsible for replication fidelity and RNA cap G-N-7 methylation, respectively. Here, we biochemically characterized G-N-7 MTase of PEDV nsp14 and found that G-N-7 MTase-deficient PEDV was defective in replication and induced greater responses of type I and III interferons. These findings highlight that CoV G-N-7 MTase may be a novel target for rational design of live attenuated vaccines and antiviral drugs.<\/jats:p>","DOI":"10.1128\/jvi.00447-20","type":"journal-article","created":{"date-parts":[[2020,5,28]],"date-time":"2020-05-28T12:49:44Z","timestamp":1590670184000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":33,"title":["Porcine Epidemic Diarrhea Virus Deficient in RNA Cap Guanine-N-7 Methylation Is Attenuated and Induces Higher Type I and III Interferon Responses"],"prefix":"10.1128","volume":"94","author":[{"given":"Yunjian","family":"Lu","sequence":"first","affiliation":[{"name":"College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, People\u2019s Republic of China"},{"name":"Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, 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