|  | Class d: Alpha and beta proteins (a+b) [53931] (286 folds) | 
|  | Fold d.19: MHC antigen-recognition domain [54451] (1 superfamily) dimeric | 
|  | Superfamily d.19.1: MHC antigen-recognition domain [54452] (1 family)  | 
|  | Family d.19.1.1: MHC antigen-recognition domain [54453] (12 proteins) | 
|  | Protein Class II MHC beta chain, N-terminal domain [88819] (15 species) | 
|  | Species Human (Homo sapiens), HLA-DQ2 [TaxId:9606] [102835] (1 PDB entry) | 
Timeline for Species Human (Homo sapiens), HLA-DQ2 [TaxId:9606] from d.19.1.1 Class II MHC beta chain, N-terminal domain: