| Class a: All alpha proteins [46456] (138 folds) |
| Fold a.24: Four-helical up-and-down bundle [47161] (11 superfamilies) |
Superfamily a.24.3: Cytochromes [47175] (2 families) ![]() |
| a.24.3.1: Cytochrome b562 [47176] (1 protein) |
| a.24.3.2: Cytochrome c' [47179] (1 protein) |
Timeline for Superfamily a.24.3: Cytochromes: