TABLE 2.

Proposed LOS outer core structures expressed by GBS- and MFS-associated strains^a

^aThe brackets indicate the portions of the LOS outer cores that are mimicking gangliosides. The HepI of the inner core is linked to a Kdo residue that is linked to the lipid A portion of the LOS (4).

^bThe exact structure could not be deduced from the observed masses, but the composition of the sugar residues was consistent with an “asialo-GM2”-like (GA2) structure.

^cThe observed masses suggest that this LOS structure is related to the LOS outer core structure of strain ATCC 43431 (HS:3 type strain) (5).