Immunogen sequence: EVDVGLAADV GTLQRLPKVI GNQSLVNELA FTARKMMADE ALGSGLVSRV FPDKEVMLDA ALALAAEISS KSPVAVQSTK VNLLYSRDHS VAESLNYVAS WNMSMLQTQD LVKSVQATTE NKELKTVTF. This gene encodes a member of the hydratase/isomerase superfamily. The gene product shows h