Automated description from the Alliance of Genome Resources (Release 4.0)
Exhibits aspartic-type peptidase activity and glutamic-type peptidase activity. Involved in several processes, including negative regulation of binding activity of sperm to zona pellucida; positive regulation of protein processing; and prevention of polyspermy. Localizes to cortical granule and plasma membrane. Is expressed in early conceptus and oocyte. Orthologous to human ASTL (astacin like metalloendopeptidase).