Enables glial cell-derived neurotrophic factor receptor activity and receptor tyrosine kinase binding activity. Involved in positive regulation of MAPK cascade and reduction of food intake in response to dietary excess. Acts upstream of or within negative regulation of extrinsic apoptotic signaling pathway in absence of ligand; negative regulation of neuron apoptotic process; and stress-activated protein kinase signaling cascade. Located in plasma membrane. Orthologous to human GFRAL (GDNF family receptor alpha like). [provided by Alliance of Genome Resources, Apr 2022]