Immunogen sequence: VVVTGLTLVC SSAPGPLELD LTGDLESFKK QSFVLKEGVE YRIKISFRVN REIVSGMKYI QHTYRKGVKI DKTDYMVGSY G. Aplysia Ras-related homologs (ARHs), also called Rho genes, belong to the RAS gene superfamily encoding small guanine nucleotide exchange (GTP/