1HOC:
reference: The three-dimensional structure of H-2Db at 2.4 A resolution: implications for antigen-determinant selection., Young AC, Zhang W, Sacchettini JC, Nathenson SG, Cell 1994 Jan 14;76(1):39-50. PMID: 7506996

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