Immunogen sequence: SILEENVLLG SGTVIGSNCF ITNSVIGPGC HIGDNVVLDQ TYLWQGVRVA AGAQIHQSLL CDNAEVKERV TLKPRSVLTS QVVVGPNITL PEGSVISLHP PD. This gene encodes one of five subunits of eukaryotic translation initiation factor 2B, a GTP exchange factor for eukaryo