1FV1:
reference: Structural basis for the binding of an immunodominant peptide from myelin basic protein in different registers by two HLA-DR2 proteins., Li Y, Li H, Martin R, Mariuzza RA, J Mol Biol 2000 Nov 24;304(2):177-88. PMID: 11080454

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