Binding of the Duck Tembusu Virus Protease to STING Is Mediated by NS2B and Is Crucial for STING Cleavage and for Impaired Induction of IFN-β

Abstract excerpt

Duck Tembusu virus (DTMUV) is a newly emerged causative agent of avian disease. The protease-dependent immune evasion of flaviviruses has been reported; however, the molecular details of this process are unclear. In this study, we found that DTMUV nonstructural protein 2B-3, a NS2B3 protease, can inhibit IFN-β production. DTMUV NS2B3 inhibited RIG-I-, MDA5-, MAVS-, and STING-directed IFN-β transcription, but not...

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