Class a: All alpha proteins [46456] (290 folds) |
Fold a.250: IpaD-like [140692] (1 superfamily) 6 helices; bundle, up-and-down; can be divided into two four-helical bundles sharing two helices (3 and 6), which are twice longer than the rest |
a.250.1: IpaD-like [140693] (2 families) |
Timeline for Fold a.250: IpaD-like: