Immunogen sequence: QTQSPEEMQG WINKINCVAA VFSAPPFPAA IGSQKKFSRP LLPATTTKLS QEEQLKSHES KLKQITTELA EHRSYPPDKK VKAKDVDEYK LKDHYLEFEK TRYEMYVSIL KEGGKELLSN DESEAAGLKK SHSSPSLNPD TSPITAKVKR NVSERKDHRP ETPSIKQKVT. Guanine nucleotide exchange factor for ARF6.