3KNP:
reference: Ligand-bound structures provide atomic snapshots for the catalytic mechanism of D-amino acid deacylase., Bhatt TK, Yogavel M, Wydau S, Berwal R, Sharma A, J Biol Chem. 2010 Feb 19;285(8):5917-30. Epub 2009 Dec 9. PMID: 20007323

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