Predicted to enable hormone activity and prolactin receptor binding activity. Acts upstream of or within maternal process involved in female pregnancy and response to hypoxia. Predicted to be active in extracellular space. Is expressed in branchial arch; extraembryonic component; and placenta. Human ortholog(s) of this gene implicated in carotid artery disease. Orthologous to human PRL (prolactin). [provided by Alliance of Genome Resources, Apr 2022]