Fold: lambda repressor-like DNA-binding domains

core: 4 helices; folded leaf, closed

Lineage:

1. Root: scop
2. Class: All alpha proteins
3. Fold: lambda repressor-like DNA-binding domains
   core: 4 helices; folded leaf, closed

Superfamilies:

1. lambda repressor-like DNA-binding domains (5)
   1. POU-specific domain (2)
   2. Phage repressors (6)
   3. SinR repressor, DNA-binding domain (1)
   4. Cyanase N-terminal domain (1)
      probably does not bind to DNA
   5. Bacterial repressors (3)
      lacks the first helix of canonical fold
      3 helices; bundle, partly opened, right-handed twist