lgtB 279 Lacto-N-neotetraose biosynthesis glycosyltransferase lgtB LGTB_NEIGO Adds the second galactose to the lacto-N-tetraose chain in lipooligosaccharide (LOS). MQNHVISLASAAERRAHIAATFGSRGIPFQFFDALMPSERLERAMAELVPGLSAHPYLSGVEKACFMSHAVLWEQALDEGVPYIAVFEDDVLLGEGAEQFLAEDTWLQERFDPDSAFVVRLETMFMHVLTSPSGVADYGGRAFPLLESEHCGTAGYIISRKAMRFFLDRFAVLPPERLHPVDLMMFGNPDDREGMPVCQLNPALCAQELHYAKFHDQNSALGSLIEHDRRLNRKQQWRDSPANTFKHRLIRALTKIGREREKRRQRREQLIGKIIVPFQ