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• W3001640105 endingPage "197867" @default.
• W3001640105 startingPage "197867" @default.
• W3001640105 abstract "Infections produced by hepaciviruses have been associated with liver disease in horses. Currently, at least three viruses belonging to the Flaviviridae family are capable of producing a chronic infection in equines: non-primate hepacivirus (NPHV), Theiler's disease-associated virus (TDAV), and equine pegivirus (EPgV). The RNA-dependent RNA polymerases of viruses (RdRp) (NS5 protein), from the flavivirus family, use de novo RNA synthesis to initiate synthesis. The two antiviral drugs currently used to treat hepatitis C (HCV), sofosbuvir and dasabuvir, act on the viral NS5B polymerase as nucleoside and non-nucleoside inhibitors, respectively. Both drugs have shown significant clinical inhibition of viral response. In this work, we aimed to model the NS5B polymerase of the equine hepacivirus (EHCV) subtypes 1 and 2, TDAV and EPgV, to assess whether current direct-acting antiviral drugs against HCV interact with these proteins. Crystal structures of HCV-NS5B were used as templates for modeling target sequences in both conformations (open and closed). Also, molecular docking of sofosbuvir and dasabuvir were performed to predict their possible binding modes at the modeled NS5B polymerase binding sites. We observed that the NS5B models of the EHCV and EPgV shared well-conserved 3D structures to HCV-NS5B and other RdRps, suggesting functional conservation. Interactions of EHCV subtypes 1, 2 and TDAV polymerases with sofosbuvir showed a similar molecular interaction pattern compared to HCV-NS5B, while interactions with dasabuvir were less conserved. In silico studies of molecular interactions between these modeled structures and sofosbuvir suggest that this compound could be efficient in combating equine pathogens, thus contributing to animal welfare." @default.
• W3001640105 created "2020-01-30" @default.
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• W3001640105 date "2020-03-01" @default.
• W3001640105 modified "2023-10-16" @default.
• W3001640105 title "Structural insights into NS5B protein of novel equine hepaciviruses and pegiviruses complexed with polymerase inhibitors" @default.
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• W3001640105 doi "https://doi.org/10.1016/j.virusres.2020.197867" @default.
• W3001640105 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31972246" @default.
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