NEDD4 family-interacting protein 2 (NDFIP2)

Activates HECT domain-containing E3 ubiquitin-protein ligases, such as ITCH, NEDD4, NEDD4L, SMURF2, WWP1 and WWP2, and consequently modulates the stability of the targets. Consequently, may control many cellular processes.

Recruits ITCH, NEDD4 and SMURF2 to endosomal membranes. Negatively regulates KCNH2 potassium channel activity by decreasing its cell-surface expression and interfering with station maturation through recruitment of NEDD4L to the Golgi apparatus and multivesicular body where it mediates KCNH2 degradation (PubMed:26363003).