title: Chemical characterization of lipopolysaccharides from Legionella feeleii, Legionella hackeliae and Legionella jordanis.
abstract: Lipopolysaccharides (LPS) from Legionella feeleii serogroup 1, L. hackeliae serogroup 1 and L. jordanis were subjected to chemical analysis. All three LPS contained D-mannose, D-glucose, D-glucosamine, L-glycero-D-manno-heptose, 2-keto-3-deoxyoctonic acid and glycerol. In addition the LPS of L. feeleii was characterized by L-quinovose (tentatively identified) and L-fucosamine, L. hackeliae LPS by D-quinovosamine, D-galactosamine and D-galacturonic acid, and L. jordanis LPS by D-quinovosamine. Phosphorylated sugars were detected in all three LPS. The backbone sugar of the lipid A part was in each case 2,3-diamino-2,3-dideoxy-D-glucose substituted with a complex pattern of fatty acid, including 20-22 different amide-linked (non-branched and methyl-branched) 3-hydroxy fatty acids of chain-length ranging from 12 to 23 carbon atoms. The fatty acid patterns included also ester-linked nonhydroxylated entities and the uncommon 27-oxo-octacosanoic acid and 29-oxotriacontanoic acid. The LPS of L. hackeliae and L. jordanis also contained heptacosane-1,27-dioic and nonacosane-1,29-dioic acid, and their 2-hydroxy analogues were characteristic of L. jordanis LPS. SDS-PAGE patterns of the three LPS were distinctly different. Both L. feeleii and L. jordanis produced smooth-form LPS with characteristic ladder patterns, whereas L. hackeliae LPS were of more rough-type character.
authors.affiliation: National Institute of Public Health, Oslo, Norway.
authors.forename: A
authors.initials: A
authors.lastname: Sonesson
authors.forename: E
authors.initials: E
authors.lastname: Jantzen
authors.forename: T
authors.initials: T
authors.lastname: Tangen
authors.forename: U
authors.initials: U
authors.lastname: Zähringer
mesh_terms: D002241:Carbohydrates / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D005227:Fatty Acids / Q000032:analysis; D007875:Legionella / Q000737:chemistry*; D008055:Lipids / Q000032:analysis; D008070:Lipopolysaccharides / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D002241:Carbohydrates; D005227:Fatty Acids; D008055:Lipids; D008070:Lipopolysaccharides