Predicted to enable G protein-coupled receptor activity. Involved in neuron projection development. Acts upstream of or within response to light stimulus and sleep. Predicted to be located in membrane. Predicted to be active in plasma membrane. Is expressed in brain; head; and trunk. Human ortholog(s) of this gene implicated in hypogonadotropic hypogonadism 3 with or without anosmia. Orthologous to human PROKR1 (prokineticin receptor 1) and PROKR2 (prokineticin receptor 2).