Enables ATP binding activity. Involved in regulation of presynaptic cytosolic calcium ion concentration and regulation of synaptic vesicle exocytosis. Located in apical plasma membrane and basolateral plasma membrane. Is active in glutamatergic synapse. Is integral component of presynaptic active zone membrane. Orthologous to human P2RY4 (pyrimidinergic receptor P2Y4). [provided by Alliance of Genome Resources, Apr 2022]