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Publication Abstract from PubMed

Norovirus (NV) is a major cause of gastroenteritis worldwide. Antivirals against such important pathogens are on demand. Among the viral proteins that orchestrate viral replication, RNA-dependent-RNA-polymerase (RdRp) is a promising drug development target. From an in silico-docking search focused on the RdRp active site, we selected the compound PPNDS, which showed low micromolar IC50vs. murine NV-RdRp in vitro. We report the crystal structure of the murine NV-RdRp/PPNDS complex showing that two molecules of the inhibitor bind in antiparallel stacking interaction, properly oriented to block exit of the newly synthesized RNA. Such inhibitor-binding mode mimics two stacked nucleotide-bases of the RdRp/ssRNA complex.

PPNDS inhibits murine Norovirus RNA-dependent RNA-polymerase mimicking two RNA stacking bases.,Croci R, Tarantino D, Milani M, Pezzullo M, Rohayem J, Bolognesi M, Mastrangelo E FEBS Lett. 2014 May 2;588(9):1720-5. doi: 10.1016/j.febslet.2014.03.021. Epub, 2014 Mar 18. PMID:24657439^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.