Fold: Cytochrome c

core: 3 helices; folded leaf, opened

Lineage:

1. Root: scop
2. Class: All alpha proteins
3. Fold: Cytochrome c
   core: 3 helices; folded leaf, opened

Superfamilies:

1. Cytochrome c (5)
   covalently-bound heme completes the core
   1. monodomain cytochrome c (33)
   2. N-terminal (heme c) domain of cytochrome cd1-nitrite reductase (3)
   3. Cytochrome bc1 domain (2)
   4. Two-domain cytochrome c (2)
      duplication: consists of two cytochrome c type domains
   5. Di-haem cytohrome c peroxidase (1)
      duplication: contains two cytochtome c-type domains