Differences between the LPS cores in adherent and nonadherent strains of enteropathogenic Escherichia coli 0119

Adherent enteropathogenic Escherichia coli 0119 strains had a larger lipopolysaccharide core than non-adherent strains, although the O-chains were identical. The core from the non-adherent strain 19392 contained five hexose residues in the outer region, with three l-glycero-d-manno-heptose residues and 3-deoxy-d-manno-octulosonic acid (KDO) in the inner region. The core of adherent strain JCP88 had an atypical structure consisting of six hexose residues, KDO, and equimolar amounts of l-glycero-d-manno-heptose and d-glycero-d-manno-heptose. The core of a rough JCP88 mutant resembled an incomplete 19392 core.