|  | Class a: All alpha proteins [46456] (284 folds) | 
|  | Fold a.22: Histone-fold [47112] (1 superfamily) core: 3 helices; long middle helix is flanked at each end with shorter ones | 
|  | Superfamily a.22.1: Histone-fold [47113] (4 families)  | 
|  | Family a.22.1.3: TBP-associated factors, TAFs [47134] (14 proteins) | 
|  | Protein Chrac-16 [140400] (1 species) | 
|  | Species Fruit fly (Drosophila melanogaster) [TaxId:7227] [140401] (2 PDB entries) Uniprot Q9V452 29-100 | 
|  | Domain d2byka1: 2byk A:29-100 [129486] Other proteins in same PDB: d2bykb1, d2bykd1 protein/DNA complex; complexed with so4 | 
|  | Domain d2bykc1: 2byk C:33-98 [129488] Other proteins in same PDB: d2bykb1, d2bykd1 automatically matched to 2BYK A:29-100 protein/DNA complex; complexed with so4 | 
|  | Domain d2byma1: 2bym A:35-99 [129493] Other proteins in same PDB: d2bymb1, d2bymd1 automatically matched to 2BYK A:29-100 protein/DNA complex; complexed with cd | 
|  | Domain d2bymc1: 2bym C:36-99 [129495] Other proteins in same PDB: d2bymb1, d2bymd1 automatically matched to 2BYK A:29-100 protein/DNA complex; complexed with cd | 
Timeline for Species Fruit fly (Drosophila melanogaster) [TaxId:7227] from a.22.1.3 Chrac-16: