Immunogen sequence: HSKRSKSKER KPEGKPRPGM SSWWSSDDNL DSDSTYRTPS VLNRHHLGPV AHCYPDALQS PFGDLSLKTS KSNNDVKCSA CEGLALTPDA KYLKRSSWST Highest antigen sequence identity to the following orthologs: Mouse - 85%, Rat - 84%. SAP90/PSD-95-associated protein 2 (SAP