Lineage for Family a.231.1.2: EspA chaperone CesA

1. Root: SCOP 1.73

2. Class a: All alpha proteins [46456] (258 folds)

3. Fold a.231: EspA/CesA-like [116926] (1 superfamily) 4 helices; bundle, closed, left ight-handed twist; interlocked (hetero)dimer of 2-helical subunits

4. Superfamily a.231.1: EspA/CesA-like [116927] (2 families) secreted protein and its chaperone both adopt similar substructures in the heterodimer

5. Family a.231.1.2: EspA chaperone CesA [116931] (1 protein)