4ZL4:
reference: Structural basis for plasmepsin V inhibition that blocks export of malaria proteins to human erythrocytes., Hodder AN, Sleebs BE, Czabotar PE, Gazdik M, Xu Y, O'Neill MT, Lopaticki S, Nebl T, Triglia T, Smith BJ, Lowes K, Boddey JA, Cowman AF, Nat Struct Mol Biol. 2015 Aug;22(8):590-6. doi: 10.1038/nsmb.3061. Epub 2015 Jul , 27. PMID: 26214367

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