| 3O2C: reference: High-resolution crystal structures of trimeric and rod phycocyanin., David L, Marx A, Adir N, J Mol Biol. 2011 Jan 7;405(1):201-13. Epub 2010 Oct 28. PMID: 21035460 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).