| Class a: All alpha proteins [46456] (284 folds) |
| Fold a.177: Sigma2 domain of RNA polymerase sigma factors [88945] (1 superfamily) multihelical; consists of a conserved 4-helical core and a variable insert subdomain |
a.177.1: Sigma2 domain of RNA polymerase sigma factors [88946] (1 family) ![]() |
Timeline for Fold a.177: Sigma2 domain of RNA polymerase sigma factors: