Fold: Cysteine-rich domain

dimetal(zinc)-bound alpha+beta fold

Lineage:

1. Root: scop
2. Class: Small proteins
   Usually dominated by metal ligand, heme, and/or disulfide bridges
3. Fold: Cysteine-rich domain
   dimetal(zinc)-bound alpha+beta fold

Superfamilies:

1. Cysteine-rich domain (2)
   1. Protein kinase cysteine-rich domain (cys2, phorbol-binding domain) (4)
   2. TFIIH p44 subunit cysteine-rich domain (1)