Predicted to be involved in fusion of sperm to egg plasma membrane involved in single fertilization. Predicted to act upstream of or within sperm-egg recognition. Predicted to be located in acrosomal matrix and acrosomal membrane. Predicted to be active in acrosomal vesicle and sperm flagellum. Orthologous to human SPACA3 (sperm acrosome associated 3). [provided by Alliance of Genome Resources, Apr 2022]