Receptor for neurturin. Mediates the NRTN-induced autophosphorylation and activation of the RET receptor. Also able to mediate GDNF signaling through the RET tyrosine kinase receptor.; FUNCTION
Gdnf mediates its actions through a multicomponent receptor system composed of a ligand-binding glycosyl-phosphatidylinositol (gpi)-linked protein (designated gdnfr-alpha).