2DJ5:
reference: Crystal Structure of the Vitamin B(12) Biosynthetic Cobaltochelatase, CbiX (S), from Archaeoglobus Fulgidus., Yin J, Xu LX, Cherney MM, Raux-Deery E, Bindley AA, Savchenko A, Walker JR, Cuff ME, Warren MJ, James MN, J Struct Funct Genomics. 2006;7(1):37-50. Epub 2006 Jul 12. PMID: 16835730

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