Lineage for Family b.129.2.1: PG0164-like

1. Root: SCOP 1.73

2. Class b: All beta proteins [48724] (165 folds)

3. Fold b.129: Double-split beta-barrel [89446] (2 superfamilies) pseudobarrel; capped on both ends by alpha-helices

4. Superfamily b.129.2: PG0164-like [141694] (1 family) six-stranded barrel, topologically similar to the Reductase/isomerase/elongation factor domain fold (scop_cf 50412)

5. Family b.129.2.1: PG0164-like [141695] (1 protein) duplication: comprises two intertwinned beta(2)-alpha-beta structural repeats