1BX2:
reference: Crystal structure of HLA-DR2 (DRA*0101, DRB1*1501) complexed with a peptide from human myelin basic protein., Smith KJ, Pyrdol J, Gauthier L, Wiley DC, Wucherpfennig KW, J Exp Med 1998 Oct 19;188(8):1511-20. PMID: 9782128

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