|  | Class d: Alpha and beta proteins (a+b) [53931] (194 folds) | 
|  | Fold d.50: dsRBD-like [54767] (3 superfamilies) | 
|  | Superfamily d.50.3: PI-Pfui intein middle domain [54786] (1 family)  | 
|  | Family d.50.3.1: PI-Pfui intein middle domain [54787] (1 protein) | 
|  | PI-Pfui intein middle domain [54788] (1 species) | 
|  | Species Archaeon Pyrococcus furiosus [TaxId:2261] [54789] (1 PDB entry) | 
Timeline for Family d.50.3.1: PI-Pfui intein middle domain: