Predicted to enable co-receptor binding activity and receptor antagonist activity. Predicted to be involved in negative regulation of canonical Wnt signaling pathway and negative regulation of cellular biosynthetic process. Predicted to act upstream of or within Wnt signaling pathway. Located in extracellular space. Is expressed in several structures, including brain; cardiovascular system; eye; limb; and tooth. Orthologous to human DKK3 (dickkopf WNT signaling pathway inhibitor 3). [provided by Alliance of Genome Resources, Apr 2022]