Immunogen sequence: PTNQIRLTNV AVVRMKRAGK RFEIACYKNK VVGWRSGVEK DLDEVLQTHS VFVNVSKGQV AKKEDLISAF GTDDQTEICK QILTKGEVQV SDKERHTQLE QMFRDIATIV ADKCVNPETK RPYTVILIER AMKDIHYSVK. This gene encodes a member of a highly conserved protein family that exists fro