2RMC:
reference: Crystal structure of murine cyclophilin C complexed with immunosuppressive drug cyclosporin A., Ke H, Zhao Y, Luo F, Weissman I, Friedman J, Proc Natl Acad Sci U S A 1993 Dec 15;90(24):11850-4. PMID: 8265636

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