Fold: Inhibitor of apoptosis (IAP) repeat

metal(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: Inhibitor of apoptosis (IAP) repeat
   metal(zinc)-bound alpha+beta fold

Superfamilies:

1. Inhibitor of apoptosis (IAP) repeat (1)
   1. Inhibitor of apoptosis (IAP) repeat (3)
      1. 2MIHB/C-IAP-1
         baculoviral inhibitor of apoptosis
         1. Human (Homo sapiens) (1)
      2. BIR domains of XIAP
         1. Human (Homo sapiens) (3)
      3. Anti-apoptotic protein survivin
         contains a long alpha-helix after the common fold
         1. Human (Homo sapiens) (2)