4JGI:
reference: Structure of the cobalamin-binding protein of a putative O-demethylase from Desulfitobacterium hafniense DCB-2., Sjuts H, Dunstan MS, Fisher K, Leys D, Acta Crystallogr D Biol Crystallogr. 2013 Aug;69(Pt 8):1609-16. doi:, 10.1107/S0907444913011323. Epub 2013 Jul 20. PMID: 23897483

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