3OXC:
reference: Atomic resolution crystal structures of HIV-1 protease and mutants V82A and I84V with saquinavir., Tie Y, Kovalevsky AY, Boross P, Wang YF, Ghosh AK, Tozser J, Harrison RW, Weber IT, Proteins. 2007 Apr 1;67(1):232-42. PMID: 17243183

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