Enables G protein-coupled receptor binding activity. Involved in several processes, including male gonad development; oocyte maturation; and positive regulation of cAMP-mediated signaling. Located in extracellular space and perinuclear region of cytoplasm. Human ortholog(s) of this gene implicated in cryptorchidism. Orthologous to human INSL3 (insulin like 3). [provided by Alliance of Genome Resources, Apr 2022]