Receptor for dopamine. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase. In terms of antagonist responses, would be classed with the D1-like dopamine receptor group. Expressed in pharyngeal neurons I1 and I2, neurons ASG, AVL, CAN, PQR, vulva, intestine, rectal glands and rectal epithelial glands. Also expressed in neurons in ray 8 in males. Belongs to the G-protein coupled receptor 1 family.