Immunogen sequence: TANEKSTMQE LNSRLASYLD KVQALEEANN DLENKIQDWY DKKGPAAIQK NYSPYYNTID DLKDQIVDLT VGNNKTLLDI DNTRMTLDDF RIKFEMEQNL RQGVDADING LRQVLDNLTM EKSDLEMQYE TLQEELMALK KNHKEEMSQL TGQNSGDVNV EINVAPGKDL TKTLNDMRQE YEQLIAKNRK DIENQYETQI TQIEHEVSSS GQE