Immunogen sequence: FLPKAKQREG TFSKSDSEKI VNGTKRSSRR AGKAEQTGNK RSKPLMRSEP EKNTEESVEG IVVLENNPPG LLNQTECVSD NQVHLSESTM EHD Highest antigen sequence identity to the following orthologs: Mouse - 49%, Rat - 52%. May have a role in sperm development and fert