Immunogen sequence: LACKPFWKPR NLNISQHGSD MQVSFDHAPH NFGFRFFYLH YKLKHEGPFK RKTCKQEQTT ETTSCLLQNV SPGDYIIELV DDTNTTRKVM. Feedback inhibitor of fibroblast growth factor mediated Ras-MAPK signaling and ERK activation. May inhibit FGF-induced FGFR1 tyrosine