Lineage for Family c.55.5.2: Nitrogenase accessory factor

1. Root: SCOPe 2.08

2. Class c: Alpha and beta proteins (a/b) [51349] (148 folds)

3. Fold c.55: Ribonuclease H-like motif [53066] (7 superfamilies) 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest

4. Superfamily c.55.5: Nitrogenase accessory factor-like [53146] (3 families)

5. Family c.55.5.2: Nitrogenase accessory factor [102496] (1 protein) capable of binding the iron molybdenum cofactor, FeMo-co