2KQX:
reference: Structural basis of the regulation of the CbpA co-chaperone by its specific modulator CbpM., Sarraf NS, Baardsnes J, Cheng J, O'Connor-McCourt M, Cygler M, Ekiel I, J Mol Biol. 2010 Apr 23;398(1):111-21. Epub 2010 Mar 10. PMID: 20226195

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