|  | Class a: All alpha proteins [46456] (171 folds) | 
|  | Fold a.4: DNA/RNA-binding 3-helical bundle [46688] (11 superfamilies) core: 3-helices; bundle, closed or partly opened, right-handed twist; up-and down | 
|  | Superfamily a.4.1: Homeodomain-like [46689] (11 families)  consists only of helices | 
|  | Family a.4.1.5: Paired domain [46748] (3 proteins) duplication: consists of two domains of this fold | 
|  | Paired protein (prd) [46751] (1 species) | 
|  | Species Fruit fly (Drosophila melanogaster) [TaxId:7227] [46752] (1 PDB entry) | 
|  | Pax-5 [68962] (1 species) | 
|  | Species Human (Homo sapiens) [TaxId:9606] [68963] (2 PDB entries) | 
|  | Pax-6 [68936] (1 species) | 
|  | Species Human (Homo sapiens) [TaxId:9606] [46750] (1 PDB entry) | 
Timeline for Family a.4.1.5: Paired domain: