Enables peptide hormone binding activity and protein-hormone receptor activity. Involved in several processes, including gonad development; negative regulation of locomotor rhythm; and positive regulation of cell communication. Located in extracellular space and plasma membrane. Used to study several diseases, including chronic kidney disease; glucose metabolism disease (multiple); obesity; pancreatitis; and renal fibrosis. Biomarker of pre-eclampsia and short bowel syndrome. Human ortholog(s) of this gene implicated in several diseases, including artery disease (multiple); non-alcoholic fatty liver disease (multiple); obesity; obstructive sleep apnea; and type 2 diabetes mellitus. Orthologous to human LEPR (leptin receptor). [provided by Alliance of Genome Resources, Apr 2022]