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Herpesviruses have hijacked host processes of DNA repair and nucleotide metabolism by encoding a viral UNG that excises uracils and a viral dUTPase that initiates conversion of dUTP to dTTP. To better understand the impact of these processes on gammaherpesvirus pathogenesis, we examined the separate and collaborative roles of vUNG and vDUT upon MHV68 infection of mice. Simultaneous disruption of the enzymatic activities of both vUNG and vDUT led to a severe defect in acute replication and establishment of latency, while also revealing a novel, combinatorial function in promoting viral genomic stability. We propose that herpesviruses require these enzymatic processes to protect the viral genome from damage, possibly triggered by misincorporated uracil. This reveals a novel point of therapeutic intervention to potentially block viral replication and reduce the fitness of multiple herpesviruses.<\/jats:p>","DOI":"10.1128\/mbio.01831-18","type":"journal-article","created":{"date-parts":[[2018,10,29]],"date-time":"2018-10-29T12:59:06Z","timestamp":1540817946000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":14,"title":["Combinatorial Loss of the Enzymatic Activities of Viral Uracil-DNA Glycosylase and Viral dUTPase Impairs Murine Gammaherpesvirus Pathogenesis and Leads to Increased Recombination-Based Deletion in the Viral Genome"],"prefix":"10.1128","volume":"9","author":[{"given":"Qiwen","family":"Dong","sequence":"first","affiliation":[{"name":"Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York, USA"},{"name":"Graduate Program of Molecular and Cellular Biology, Stony Brook University, Stony Brook, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyle R.","family":"Smith","sequence":"additional","affiliation":[{"name":"Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Darby G.","family":"Oldenburg","sequence":"additional","affiliation":[{"name":"Gundersen Health System, La Crosse, Wisconsin, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maxwell","family":"Shapiro","sequence":"additional","affiliation":[{"name":"Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William R.","family":"Schutt","sequence":"additional","affiliation":[{"name":"Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laraib","family":"Malik","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Stony Brook University, Stony Brook, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua B.","family":"Plummer","sequence":"additional","affiliation":[{"name":"Department of Epigenetics and Molecular Carcinogenesis, Division of Science Park, The University of Texas M. 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