E3 ubiquitin-protein ligase ZNRF3 (ZNRF3)

E3 ubiquitin-protein ligase that functions as a negative regulator of the Wnt signaling pathway by mediating the ubiquitination and subsequent degradation of Wnt receptor complex components Frizzled and LRP6. Acts on both canonical and non- canonical Wnt signaling pathway.

Acts as a tumor suppressor in the intestinal stem cell zone by inhibiting the Wnt signaling pathway, thereby resticting the size of the intestinal stem cell zone. .