Fold: Nucleotide-binding domain

3 layers: a/b/a; parallel beta-sheet of 5 strands, order 32145; Rossmann-like

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a/b)
   Mainly parallel beta sheets (beta-alpha-beta units)
3. Fold: Nucleotide-binding domain
   3 layers: a/b/a; parallel beta-sheet of 5 strands, order 32145; Rossmann-like

Superfamilies:

1. Nucleotide-binding domain (2)
   this superfamily shares the common nucleotide-binding site with and provides alink between the Rossmann-fold NAD(P)-binding and FAD/NAD(P)-binding domains
   1. N-terminal domain of adrenodoxin reductase-like (3)
   2. D-amino acid oxidase, N-terminal domain (2)
      This family is probably related to the FAD-linked reductases and shares with them the C-terminal domain fold