Positively Charged Amino Acids in the Pestiviral E^rns Control Cell Entry, Endoribonuclease Activity and Innate Immune Evasion.

ABSTRACT: The genus Pestivirus, family Flaviviridae, includes four economically important viruses of livestock, i.e., bovine viral diarrhea virus-1 (BVDV-1) and -2 (BVDV-2), border disease virus (BDV) and classical swine fever virus (CSFV). E^rns and N^pro, both expressed uniquely by pestiviruses, counteract the host's innate immune defense by interfering with the induction of interferon (IFN) synthesis. The structural envelope protein E^rns also exists in a soluble form and, by its endoribonuclease activity, degrades immunostimulatory RNA prior to their activation of pattern recognition receptors. Here, we show that at least three out of four positively-charged residues in the C-terminal glycosaminoglycan (GAG)-binding site of BVDV-E^rns are req

SUBMITTER: Lussi C 

PROVIDER: S-EPMC8402660 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature