Immunogen sequence: GVYLHTSAKK YQDRDSLIAG VIRVVEKDND VLLHWAPVEE AGDSTQILFS KKDSSGGDSC ASEEEPTFDP GYEPDWAVIS TVRPQLCHSE PTRGAEPSC Highest antigen sequence identity to the following orthologs: Mouse - 80%, Rat - 82%. Probable GTPase-activating protein for