Immunogen sequence: HSYVLSAAKK STGSPTQETQ APFIAKRVEV VEEDGPSEKS QDPPALARST PGSNSSRGEE IVRLQILTPR AGLRLVAPDV EGMRSSPGNK DKEAPCSREL QRDLAGEEAF RAPNTDAARS SAQLSDGNVG SGATGSRPEG LAAVDIGSER GSSSATSVSA APADRKSNST AAQEDAKAD Highest antigen sequence identity to