G-protein coupled receptor for PEN, a neuropeptide produced from the precursor protein, proSAAS (encoded by PCSK1N). Acts through a G(i)- and G(q)-alpha-alpha-mediated pathway in response to PEN. Plays a role in food intake and body weight regulation. May contribute to the regulation of anxiety-related behaviors. Colocalizes with GPR171 in the paraventricular nucleus. Colocalizes with the ghrelin receptor GHSR1A in the hypothalamus. NPY has been reported to be a ligand for GPR83 (By similarity). However, a more recent study found that radiolabeled PEN binding to GPR83 is not affected by NPY concentrations below 1 mM, only very high, non-physiological concentrations causes a partial, displacement of PEN binding (By similarity). Belongs to the G-protein coupled receptor 1 family.