Orphan receptor with constitutive G(s) signaling activity that activate cyclic AMP. Promotes neurite outgrowth and blocks myelin inhibition in neurons. Detected in the intracellular compartments. It is currently unclear whether this is a cell surface or intracellular receptor (By similarity). Expressed in the brain, with a prominent distribution in striatum. Abundantly expressed in granule neurons at all developmental stages. Belongs to the G-protein coupled receptor 1 family.