Immunogen sequence: NENKPYLFYF NIVKCASPLV LLEFQCPTPQ ICVEKCPDRY LTYLNARSSR DFEYYKQFCV PGFKNNKGVA EVLRDGDCPA VLIPSKPLAR RCFPAIHAYK GVLMVGNETT YEDGHGSRKN ITDLVE Highest antigen sequence identity to the following orthologs: Mouse - 83%, Rat - 87%. Isoform 1