|  | Class d: Alpha and beta proteins (a+b) [53931] (376 folds) | 
|  | Fold d.148: Hect, E3 ligase catalytic domain [56203] (1 superfamily) consists of two alpha+beta domains; the N-terminal domain is array of helices and beta-hairpins; the C-terminal domain is an a/b sandwich with one left-handed beta-alpha(n)-beta unit; conformational flexibility of domain orientation | 
|  | Superfamily d.148.1: Hect, E3 ligase catalytic domain [56204] (1 family)  | 
|  | Family d.148.1.1: Hect, E3 ligase catalytic domain [56205] (2 proteins) | 
|  | Ubiquitin-protein ligase E3a (E6ap) [56206] (1 species) | 
|  | Species Human (Homo sapiens) [TaxId:9606] [56207] (2 PDB entries) | 
|  | WW domain-containing protein 1, WWP1 [103308] (1 species) | 
|  | Species Human (Homo sapiens) [TaxId:9606] [103309] (1 PDB entry) | 
Timeline for Family d.148.1.1: Hect, E3 ligase catalytic domain: