Immunogen sequence: AVRRVLKRDL KRIAKASGAT ILSTLANLEG EETFEAAMLG QAEEVVQERI CDDELILIKN TKARTSASII LRGANDFMCD EMERSLHDAL CVVKRVLESK SVVPGGGAVE AALSIYLENY ATSMGSREQL AIAEFARSLL VIPNTLAVNA AQDSTDLVAK LRAFHNEAQV NPERKNLKWI GLDLSNGKPR DNKQAGVFEP TIVKVKSLKF ATE