Predicted to enable co-receptor binding activity and receptor antagonist activity. Predicted to be involved in several processes, including negative regulation of canonical Wnt signaling pathway; negative regulation of testosterone biosynthetic process; and penetration of zona pellucida. Predicted to act upstream of or within positive regulation of fat cell differentiation. Predicted to be located in acrosomal vesicle. Predicted to be active in extracellular space. Orthologous to human DKKL1 (dickkopf like acrosomal protein 1). [provided by Alliance of Genome Resources, Apr 2022]