4BIK:
reference: Structural Basis for Recognition of the Pore-Forming Toxin Intermedilysin by Human Complement Receptor CD59., Johnson S, Brooks NJ, Smith RA, Lea SM, Bubeck D, Cell Rep. 2013 May 30;3(5):1369-77. doi: 10.1016/j.celrep.2013.04.029. Epub 2013 , May 9. PMID: 23665225

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