Fold: Anaphylotoxins (complement system)

4 helices; irregular array, disulphide-linked

Lineage:

1. Root: scop
2. Class: All alpha proteins
3. Fold: Anaphylotoxins (complement system)
   4 helices; irregular array, disulphide-linked

Superfamilies:

1. Anaphylotoxins (complement system) (1)
   1. Anaphylotoxins (complement system) (3)
      can be classified as disulphide-rich
      1. C5a anaphylotoxin
         1. Human (Homo sapiens) (2)
         2. Pig (Sus scrofa domestica) (1)
      2. C3a anaphylotoxin
         1. Human (Homo sapiens) (1)