5IDK:
reference: Peptide-Boronic Acid Inhibitors of Flaviviral Proteases: Medicinal Chemistry and Structural Biology., Nitsche C, Zhang L, Weigel LF, Schilz J, Graf D, Bartenschlager R, Hilgenfeld R, Klein CD, J Med Chem. 2016 Dec 14. PMID: 27966962

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