2YOL:
reference: Development and characterization of new peptidomimetic inhibitors of the West Nile virus NS2B-NS3 protease., Hammamy MZ, Haase C, Hammami M, Hilgenfeld R, Steinmetzer T, ChemMedChem. 2013 Feb;8(2):231-41. doi: 10.1002/cmdc.201200497. Epub 2013 Jan 10. PMID: 23307694

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).