title: Chemical structure of aeromonas gum--extracellular polysaccharide from Aeromonas nichidenii 5797.
abstract: Aeromonas (A) gum, an extracellular heteropolysaccharide produced by the bacterium Aeromonas nichidenii strain 5797, was studied by 1H and 13C NMR spectroscopy including 2D COSY, TOCSY, 1H, 13C HMQC, HMBC and ROESY experiments after O-deacetylation and Smith degradation. These investigations revealed the presence of an O-acetylated pentasaccharide repeating unit composed of mannose, glucose, xylose and glucuronic acid, and it has the following structure: [Image: see text]
authors.affiliation: Department of Chemistry, Wuhan University, 430072, China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Xu
authors.forename: Dong
authors.initials: D
authors.lastname: Ruan
authors.forename: Yong
authors.initials: Y
authors.lastname: Jin
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: Sof'ya N
authors.initials: SN
authors.lastname: Senchenkova
authors.forename: Michelle
authors.initials: M
authors.lastname: Kilcoyne
authors.forename: Angela V
authors.initials: AV
authors.lastname: Savage
authors.forename: Lina
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000333:Aeromonas / Q000737:chemistry*; D002240:Carbohydrate Sequence; D002247:Carbon Isotopes; D002849:Chromatography, Gas; D005947:Glucose / Q000032:analysis / Q000737:chemistry; D020723:Glucuronic Acid / Q000032:analysis / Q000737:chemistry; D008358:Mannose / Q000032:analysis / Q000737:chemistry; D008969:Molecular Sequence Data; D019906:Nuclear Magnetic Resonance, Biomolecular; D011134:Polysaccharides / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D012015:Reference Standards; D013696:Temperature; D014994:Xylose / Q000032:analysis / Q000737:chemistry
chemical_list: D002247:Carbon Isotopes; D011134:Polysaccharides; D020723:Glucuronic Acid; D014994:Xylose; D005947:Glucose; D008358:Mannose