| 3F9Q: reference: Crystallographic evidence for noncoplanar catalytic aspartic acids in plasmepsin II resides in the Protein Data Bank., Robbins AH, Dunn BM, Agbandje-McKenna M, McKenna R, Acta Crystallogr D Biol Crystallogr. 2009 Mar;65(Pt 3):294-6. Epub 2009, Feb 20. PMID: 19237752 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).