1ED3:
reference: Two different, highly exposed, bulged structures for an unusually long peptide bound to rat MHC class I RT1-Aa., Speir JA, Stevens J, Joly E, Butcher GW, Wilson IA, Immunity 2001 Jan;14(1):81-92. PMID: 11163232

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