Automated description from the Alliance of Genome Resources (Release 3.2)
Exhibits heparin binding activity and signaling receptor binding activity. Involved in several processes, including male meiotic nuclear division; positive regulation of Wnt signaling pathway; and regulation of male germ cell proliferation. Localizes to extracellular space and nucleus. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; integumental system; and limb. Orthologous to human RSPO1 (R-spondin 1).