| 1BT2: reference: Crystal structure of a plant catechol oxidase containing a dicopper center., Klabunde T, Eicken C, Sacchettini JC, Krebs B, Nat Struct Biol 1998 Dec;5(12):1084-90. PMID: 9846879 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).