Immunogen sequence: HGQDFDQRAR EEFRPTIYSN VIKGMRVLVD AREKLHIPWG DNSNQQHGDK MMSFDTRAPM AAQGMVETRV FLQYLPAIRA LWADSGIQNA YDRRREFQLG ES Highest antigen sequence identity to the following orthologs: Mouse - 95%, Rat - 95%. Guanine nucleotide-binding proteins