Immunogen sequence: STPSPYGLSY PQGYSLASGQ LSPAAAPPLA SPSVFTSTLS KSRPTPKPRQ RPTLPPPQPP TVNLSASSPQ STEAPMLDGM SPGESMSTDL VHFDIPSIHI ELGSTLRLSP LEHMRRHSVT DKRDSE Highest antigen sequence identity to the following orthologs: Mouse - 92%, Rat - 93%. GTPase-ac