Immunogen sequence: MPPLKSPAAF HEQRRSLERA RTEDYLKRKI RSRPERSELV RMHILEETSA EPSLQAKQLK LKRARLADDL NEKIAQRPGP MELVEKNILP VESSLKEAII VGQVNYPKVA DSSSFDEDSS DALSPEQPAS HESQGSVPSP LEARVSEPLL SATSASPTQV VSQLPMGRDS REMLFLAEQP PLPPPPLLPP SLTNGTTIPT AKSTPTLIKQ SQP