Lineage for Species: Pyrococcus horikoshii [TaxId: 53953]

1. Root: SCOP 1.73

2. Class c: Alpha and beta proteins (a/b) [51349] (141 folds)

3. Fold c.8: The "swivelling" beta/beta/alpha domain [52008] (10 superfamilies) 3 layers: b/b/a; the central sheet is parallel, and the other one is antiparallel; there are some variations in topology this domain is thought to be mobile in most multi-domain proteins known to contain it

4. Superfamily c.8.2: LeuD/IlvD-like [52016] (3 families) contains mixed beta-sheet barrel, closed n=7, S=10

5. Family c.8.2.1: LeuD-like [52017] (4 proteins) Pfam PF00694; permutation of the domain order in the proteins containing this family domain

6. Protein Isopropylmalate isomerase LeuD [117454] (1 species) 3-isopropylmalate dehydratase small subunit

7. Species Pyrococcus horikoshii [TaxId:53953] [117455] (1 PDB entry)