4WZ9:
reference: The Anopheles-midgut APN1 structure reveals a new malaria transmission-blocking vaccine epitope., Atkinson SC, Armistead JS, Mathias DK, Sandeu MM, Tao D, Borhani-Dizaji N, Tarimo BB, Morlais I, Dinglasan RR, Borg NA, Nat Struct Mol Biol. 2015 Jun 15. doi: 10.1038/nsmb.3048. PMID: 26075520

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