Metalloprotease TIKI1 (TRABD2A)

Metalloprotease that functions as a negative regulator of the Wnt signaling pathway by mediating the cleavage of the 8 N- terminal residues of a subset of Wnt proteins. After cleavage, Wnt proteins become oxidized and form big disulfide-bond oligomers, leading to their inactivation.

Able to cleave WNT3A, WNT5, but not WNT11. Required for head formation.