Lineage for Family d.284.1.2: FGAM synthase PurL, PurS-like domain

1. Root: SCOPe 2.01

2. Class d: Alpha and beta proteins (a+b) [53931] (376 folds)

3. Fold d.284: PurS-like [109622] (1 superfamily) consists of two alpha+beta subdomains with some similarity to the ferredoxin-like fold

4. Superfamily d.284.1: PurS-like [82697] (3 families) segment-swapped dimer: the swapped segment is made of the first helix and second strand; a single long strand is formed by strands 2 and 3 of each subunit

5. Family d.284.1.2: FGAM synthase PurL, PurS-like domain [111002] (1 protein) duplication: consists of 2 structural repeats of the PurS subunit fold, assembled like the PurS dimer