4M9F:
reference: Allosteric Inhibition of the NS2B-NS3 Protease from Dengue Virus., Yildiz M, Ghosh S, Bell JA, Sherman W, Hardy JA, ACS Chem Biol. 2013 Oct 28. PMID: 24164286

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