1CWA:
reference: X-ray structure of a monomeric cyclophilin A-cyclosporin A crystal complex at 2.1 A resolution., Mikol V, Kallen J, Pflugl G, Walkinshaw MD, J Mol Biol 1993 Dec 20;234(4):1119-30. PMID: 8263916

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