Fold: Flavodoxin-like [52171]
3 layers, a/b/a; parallel beta-sheet of 5 strand, order 21345
Superfamily: Class I glutamine amidotransferase-like [52317]
conserved positions of the oxyanion hole and catalytic nucleophile; different constituent families contain different additional structures uperfamily
Family: Aspartyl dipeptidase PepE [52331]
probable circular permutation in the common core; contains a catalytic Ser-His-Glu triad