Immunogen sequence: QEFAMKSVGT RTGGGGSQGS FPGPRGSGSG ASRERPGRYP SEDKGLANSL YLNGELRGSD HTDVCGNVVG SSGGSSSSGG SDKAPPQYRE PS Highest antigen sequence identity to the following orthologs: Mouse - 92%, Rat - 91%. Prosapip1 is a binding partner of the postsyna