Lineage

Root
1. Class Alpha and beta proteins (a+b) [53931] (53931)
2. Fold Ferredoxin-like (54861)

alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2

Superfamily

Transposase IS200-like (143422)

contains extra N-terminal hairpin and C-terminal helix, both are involved in dimerization; there can be helix-swapping in the dimer
Superfamily

Family Children