3VJ6:
reference: A structural basis for antigen presentation by the MHC class Ib molecule, Qa-1b., Zeng L, Sullivan LC, Vivian JP, Walpole NG, Harpur CM, Rossjohn J, Clements CS, Brooks AG, J Immunol. 2012 Jan 1;188(1):302-10. Epub 2011 Nov 30. PMID: 22131332

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