2ODH:
reference: Monomeric Restriction Endonuclease BcnI in the Apo Form and in an Asymmetric Complex with Target DNA., Sokolowska M, Kaus-Drobek M, Czapinska H, Tamulaitis G, Szczepanowski RH, Urbanke C, Siksnys V, Bochtler M, J Mol Biol. 2007 Jun 8;369(3):722-34. Epub 2007 Mar 15. PMID: 17445830

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