Lineage for Superfamily a.24.20: Colicin D immunity protein

1. Root: SCOPe 2.07

2. Class a: All alpha proteins [46456] (289 folds)

3. Fold a.24: Four-helical up-and-down bundle [47161] (28 superfamilies) core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down

4. Superfamily a.24.20: Colicin D immunity protein [101125] (1 family) automatically mapped to Pfam PF09204