Predicted to enable G protein-coupled receptor activity and dopamine neurotransmitter receptor activity, coupled via Gs. Predicted to be involved in G protein-coupled dopamine receptor signaling pathway; adenylate cyclase-activating adrenergic receptor signaling pathway; and positive regulation of MAPK cascade. Predicted to act upstream of or within adenylate cyclase-activating G protein-coupled receptor signaling pathway and vasodilation. Predicted to be located in ciliary membrane. Predicted to be active in plasma membrane. Is expressed in nervous system. Human ortholog(s) of this gene implicated in hypertension and kidney failure. Orthologous to human DRD1 (dopamine receptor D1).