Receptor for artemin (ARTN), a growth factor that supports the survival of sensory and sympathetic peripheral neurons (PubMed:31535977, PubMed:9883723). ARTN-binding leads to autophosphorylation and activation of the RET receptor (PubMed:31535977, PubMed:9883723). {ECO:0000269|PubMed:31535977, ECO:0000269|PubMed:9883723}. This is the function of GFRA3 (GDNF family receptor alpha 3, Ensembl gene identifier ENSG00000146013).