Immunogen sequence: GSLTYSDPRER ERDQHDKNKR LLDPANTQQF DDFKKCYGEI LYRWGLREKR AEVLKFVSCP PDPHKGIEFG VYCSHCRSEV RGTQCAICKG FTFQCAIC Highest antigen sequence identity to the following orthologs - mouse 100%, rat 71%. As a component of the GATOR subcomplex GA