Immunogen sequence: EDLNVNEVFK YLAEKYLQKL KQQIAEDPEL THSSSNKIGV FNTSGGSHSG QNSGTLNGGD VINLRPNKQR TKK Highest antigen sequence identity to the following orthologs: Mouse - 85%, Rat - 86%. The Ras-related superfamily of guanine nucleotide binding proteins