6D2T:
reference: A subset of HLA-I peptides are not genomically templated: Evidence for cis- and trans-spliced peptide ligands., Faridi P, Li C, Ramarathinam SH, Vivian JP, Illing PT, Mifsud NA, Ayala R, Song J, Gearing LJ, Hertzog PJ, Ternette N, Rossjohn J, Croft NP, Purcell AW, Sci Immunol. 2018 Oct 12;3(28). pii: 3/28/eaar3947. doi:, 10.1126/sciimmunol.aar3947. PMID: 30315122

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