2RSP:
reference: Structure of the aspartic protease from Rous sarcoma retrovirus refined at 2-A resolution., Jaskolski M, Miller M, Rao JK, Leis J, Wlodawer A, Biochemistry 1990 Jun 26;29(25):5889-98. PMID: 2166563

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