1Y2Q:
reference: A D-amino acid editing module coupled to the translational apparatus in archaea., Dwivedi S, Kruparani SP, Sankaranarayanan R, Nat Struct Mol Biol 2005 Jun;12(6):556-7. Epub 2005 May 22. PMID: 15908961

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