Lineage for Family b.68.1.2: Endo-alpha-sialidase

1. Root: SCOP 1.73

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

3. Fold b.68: 6-bladed beta-propeller [50938] (11 superfamilies) consists of six 4-stranded beta-sheet motifs; meander

4. Superfamily b.68.1: Sialidases [50939] (2 families)

5. Family b.68.1.2: Endo-alpha-sialidase [117276] (1 protein) possibly related by the other family by circular permutation; includes extra N-terminal domain [dN: alpha/beta ] and insert domain [dI: beta-barrel, similar to the Reductase/isomerase/elongation factor common domain (scop_cf 50412)]