Immunogen sequence: TSEERQKMLR DFYASQYPEV KEFFVDSVSQ FNNSSFEKGE QRTRKKSDKR ESLIKPRLSD SETLSFKDST NKISQVCSLK TYKRKSVKFQ NHISYREEVF FNDAETKKSP VSSTQEIDSG KNSQASEDTV TSRSLNSESE TRERRLENTM KDQQDLTRTG ISRKEPLLKL ENKKIENPVL ENTSVISLLG DTSILDDLFK SHGNSPTQLP KKV