000000532 001__ 532 000000532 005__ 20260203133607.0 000000532 0247_ $$2DOI$$a10.6083/M4445JFS 000000532 037__ $$aETD 000000532 245__ $$aAntiviral properties of BST-2 and Kaposi's sarcoma-associated herpesvirus countermeasures 000000532 260__ $$bOregon Health and Science University 000000532 269__ $$a2010 000000532 336__ $$aThesis 000000532 502__ $$bM.S. 000000532 520__ $$aKaposi’s sarcoma–associated herpesvirus (KSHV) uses immune‑evasion strategies to support successful infection, including the activity of its viral E3 ubiquitin ligase, K5. While K5 is known to downregulate MHC class I, this study shows that it also targets the antiviral factor BST‑2, which restricts release of enveloped viruses by tethering virions to the cell surface. We demonstrate that K5 ubiquitinates lysines on the cytoplasmic tail of BST‑2 after it exits the ER, directing it to lysosomal degradation. In the absence of K5, BST‑2 restricts KSHV egress. These findings identify BST‑2 as a bona fide K5 substrate and highlight K5’s role in countering innate antiviral defenses. 000000532 540__ $$fCC BY 000000532 542__ $$fIn copyright - single owner 000000532 650__ $$aVirus Release$$038820 000000532 650__ $$aMembrane Glycoproteins$$022006 000000532 650__ $$aImmune Evasion$$038852 000000532 650__ $$aHerpesvirus 8, Human$$031505 000000532 650__ $$aImmunity, Innate$$020672 000000532 6531_ $$aviral egress 000000532 6531_ $$aherpesvirus diseases 000000532 691__ $$aSchool of Medicine$$041369 000000532 692__ $$aDepartment of Science and Engineering$$041447 000000532 7001_ $$aHines, Jennie$$uOregon Health and Science University$$041354 000000532 7201_ $$aFruch, Klaus$$uOregon Health and Science University$$041354$$7Personal$$eAdvisor 000000532 8564_ $$9236aa118-f1ef-4f66-aa2e-1b20de093e59$$s779889$$uhttps://digitalcollections.ohsu.edu/record/532/files/533_etd.pdf$$ePublic$$2de16090ce21297c4c8c7bdfd99312bfb$$31 000000532 905__ $$a/rest/prod/jh/34/3s/30/jh343s30f 000000532 909CO $$ooai:digitalcollections.ohsu.edu:532$$pstudent-work 000000532 956__ $$aGet Accessible Copy$$uhttps://ohsu.libwizard.com/f/requestaccessibledocument 000000532 980__ $$aTheses and Dissertations