Immunogen sequence: KSGSSSSMGR PGHLGSGEGG GGGLPFAACS PPSPSALIQE LEERLWEKEQ EVAALRRSLE QSEAAVAQVL EERQKAWERE LAELRQGCSG KLQQVAR Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 98%. Prosapip1 is a binding partner of the pos