Trappin protein transglutaminase-binding repeat (IPR019541)

Short name: Trappin_transglut-bd_rpt


Trappin-2,a protease inhibitor, has a unique N-terminal domain that enables it to become cross-linked to extracellular matrix proteins by transglutaminase [PMID: 10359639]. This domain contains several repeated motifs (rpresented by this entry) with the consensus sequence Gly-Gln-Asp-Pro-Val-Lys, and these together can anchor the whole molecule to extracellular matrix proteins, such as laminin, fibronectin, beta-crystallin, collagen IV, fibrinogen, and elastin, by transglutaminase-catalysed cross-links. The whole domain is rich in glutamine and lysine, thus allowing and transglutaminase(s) to catalyse the formation of an intermolecular epsilon-(gamma-glutamyl)lysine isopeptide bond [PMID: 17964057]. Cementoin is associated with the WAP family, IPR008197, at the C terminus.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.