|  | Class a: All alpha proteins [46456] (285 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] (5 families)  | 
|  | Family a.22.1.3: TBP-associated factors, TAFs [47134] (14 proteins) | 
|  | Protein TAF(II)-20, (TAF(II)-15, hTAF12), histone fold domain [81722] (1 species) forms a heterodimer with TAF(II)-135 similar to H2A-H2B | 
|  | Human (Homo sapiens) [TaxId:9606] [81723] (1 PDB entry) | 
|  | Domain d1h3ob_: 1h3o B: [76645] Other proteins in same PDB: d1h3oa_, d1h3oc_ protein/RNA complex | 
|  | Domain d1h3od_: 1h3o D: [76647] Other proteins in same PDB: d1h3oa_, d1h3oc_ protein/RNA complex | 
Timeline for Protein TAF(II)-20, (TAF(II)-15, hTAF12), histone fold domain from a.22.1.3: TBP-associated factors, TAFs: