pfam01821: ANATO (This model is not part of the current CDD release)
Anaphylotoxin-like domain
C3a, C4a and C5a anaphylatoxins are protein fragments generated enzymatically in serum during activation of complement molecules C3, C4, and C5. They induce smooth muscle contraction. These fragments are homologous to a three-fold repeat in fibulins.
Jiyao W et al.(2023). "The conserved domain database in 2023.",