Structural studies on the R-type lipopolysaccharide of Aeromonas hydrophila.
A rough strain of Aeromonas hydrophila, AH-901, has an R-type lipopolysaccharide with the complete core. The following core structure was established by chemical degradations followed by sugar and methylation analyses along with ESIMS and NMR spectroscopy: [formula: see text] where D-alpha-D-Hep and l-alpha-D-Hep stand for D-glycero- and l-glycero-alpha-D-manno-heptose, respectively; Kdo stands for 3-deoxy-D-manno-oct-2-ulosonic acid; all monosaccharides are in the pyranose form; the degree of substitution with beta-D-Gal is approximately 50%. Lipid A of the lipopolysaccharide has a 1,4(')-bisphosphorylated beta-D-GlcN-(1-->6)-alpha-D-GlcN disaccharide backbone with both phosphate groups substituted with 4-amino-4-deoxyarabinose residues.
N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia. knirel@ioc.ac.ru
Yuriy A
YA
Knirel
Evgeny
E
Vinogradov
Natalia
N
Jimenez
Susana
S
Merino
Juan M
JM
Tomás
D016980:Aeromonas hydrophila / Q000737:chemistry*; D002240:Carbohydrate Sequence; D008050:Lipid A / Q000737:chemistry; D008070:Lipopolysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D008969:Molecular Sequence Data; D019906:Nuclear Magnetic Resonance, Biomolecular; D021241:Spectrometry, Mass, Electrospray Ionization
D008050:Lipid A; D008070:Lipopolysaccharides