Immunogen sequence: PFVDGVHSRS HMGSAADVRF SLGTTTHAPP GVHRRYSALR EESAKDWETS PLPGMLAPAA GPAFDSDPEI SDVDEDEPGG LVGSADVVS Highest antigen sequence identity to the following orthologs: Mouse - 81%, Rat - 77%. PPFIA4, or liprin-alpha-4, belongs to the liprin-a