Tiki1/TRABD2A Products

Description

Tiki1, also known as TRAB Domain-containing protein 2A (TRABD2A) and C2orf89, is an evolutionarily conserved transmembrane metalloprotease that acts as an inhibitor of the Wnt signaling pathway. The term Tiki refers to a large-headed humanoid in Polynesian mythology, and Tiki1 was initially identified by functional screening as an organizer-specific protein that is required for head formation in Xenopus. Tiki1 negatively regulates Wnt signaling by mediating the cleavage of the eight N-terminal residues from a subset of Wnt proteins, including Wnt3A and Wnt5, but not Wnt11. Following this cleavage, Wnt proteins become oxidized and form large disulfide-bond oligomers, leading to their inactivation. Human Tiki1 is 505 amino acids (aa) in length; a second shorter isoform has also been identified that is missing aa 225-273.

Bioinformatics

Uniprot	Q86V40
Alternate Names	C2orf89 C2orf89;TIKI1;TRABD2A LOC129293 Tiki1 TRABD2A