Predicted to enable G protein-coupled receptor binding activity. Acts upstream of or within circadian rhythm. Predicted to be located in extracellular region. Is expressed in embryo; ovary; prostate gland; and testis. Human ortholog(s) of this gene implicated in hypogonadotropic hypogonadism 4 with or without anosmia. Orthologous to human PROK2 (prokineticin 2). [provided by Alliance of Genome Resources, Apr 2022]