Capsular polysaccharides and lipopolysaccharides from two strains of Bacteroides fragilis.
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.
D000038:Abscess / Q000139:chemically induced; D000596:Amino Acids / Q000032:analysis; D000606:Amino Sugars / Q000032:analysis; D001441:Bacteroides fragilis / Q000032:analysis*; D005227:Fatty Acids / Q000032:analysis; D006601:Hexoses / Q000032:analysis; D006603:Hexuronic Acids; D008070:Lipopolysaccharides / Q000032:analysis* / Q000633:toxicity; D011135:Polysaccharides, Bacterial / Q000032:analysis* / Q000633:toxicity; D014574:Uronic Acids / Q000032:analysis
D000596:Amino Acids; D000606:Amino Sugars; D005227:Fatty Acids; D006601:Hexoses; D006603:Hexuronic Acids; D008070:Lipopolysaccharides; D011135:Polysaccharides, Bacterial; D014574:Uronic Acids; C007819:galacturonic acid