|  | Class a: All alpha proteins [46456] (179 folds) | 
|  | Fold a.4: DNA/RNA-binding 3-helical bundle [46688] (12 superfamilies) core: 3-helices; bundle, closed or partly opened, right-handed twist; up-and down | 
|  | Superfamily a.4.13: Sigma3 and sigma4 domains of RNA polymerase sigma factors [88659] (2 families)  | 
|  | Family a.4.13.2: Sigma4 domain [88665] (4 proteins) | 
|  | Protein SigmaF [74769] (1 species) | 
|  | Species Bacillus stearothermophilus [TaxId:1422] [74770] (1 PDB entry) | 
|  | Domain d1l0oc_: 1l0o C: [73405] Other proteins in same PDB: d1l0oa_, d1l0ob_ sigma4 domain only complexed with adp, mg; mutant | 
Timeline for Species Bacillus stearothermophilus [TaxId:1422] from a.4.13.2 SigmaF: