Immunogen sequence: PQDDLMLIKL AKPAMLNPKV QPLTLATTNV RPGTVCLLSG LDWSQENSGR HPDLRQNLEA PVMSDREC Highest antigen sequence identity to the following orthologs: Mouse - 84%, Rat - 82%. PRSS37 plays a role in male fertility. May have a role in sperm migration