Enables peptide YY receptor activity. Involved in several processes, including negative regulation of cell communication; regulation of nervous system process; and regulation of secretion. Located in plasma membrane. Is integral component of plasma membrane. Used to study childhood absence epilepsy and mental depression. Biomarker of obesity. Human ortholog(s) of this gene implicated in Huntington's disease; morbid obesity; and obesity. Orthologous to human NPY2R (neuropeptide Y receptor Y2). [provided by Alliance of Genome Resources, Apr 2022]