HLA-DRB1 and rheumatoid arthritis: Since previous studies have reported that the autoreactive HLA-DRB1*04-restricted T cells in RA predominantly recognize CII259-273 when it is hydroxylated and galactosylated at K264 (GIAGFK[Gal-Hyl]GEQGPKGEP) [16,19,27], we also included in the docking analysis this modified epitope (Gal264-CII259-273).