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Dennis L. Kasper, Alf A. Lindberg, Andrej Weintraub, Andrew B. Onderdonk, Jörgen Lönngren, Capsular Polysaccharides and Lipopolysaccharides from Two Strains of Bacteroides fragilis, Reviews of Infectious Diseases, Volume 6, Issue Supplement_1, March-April 1984, Pages S25–S29, https://doi.org/10.1093/clinids/6.Supplement_1.S25
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Abstract
The capsular polysaccharide from Bacteroides fragilis strain NCTC 9343 contained six sugars: l-fucose, d-galactose, d- and l-quinovosamine, d-glucosamine, and galacturonic acid. The capsule of B. fragilis strain ATCC 23745 in addition contained d-glucose, l-fucosamine, l-rhamnosamine, and a 3-amino-3,6-dideoxyhexose, but lacked d-quinovosamine. The latter capsule also contained alanine (4%). The lipopolysaccharide of both strains contained the same sugars (l-rhamnose, d-glucose, d-galactose, and d-glucosamine) and fatty acids (13-methyltetradecanoic, 3-hydroxypentadecanoic as major constituents). The capsular polysaccharide of both strains promoted abscess formation, whereas the lipopolysaccharide failed to do so.