title: Structural studies of acetan, an exopolysaccharide elaborated by Acetobacter xylinum.
abstract: The exopolysaccharide acetan, elaborated by Acetobacter xylinum, has been investigated. The polysaccharide and a heptasaccharide, obtained on enzymic hydrolysis, corresponding to the repeating unit were characterised by sugar and methylation analysis and by NMR spectroscopy and MS. It is concluded that the polysaccharide is composed of repeating units with the following structure. [formula: see text] The polysaccharide further contains approximately two O-acetyl groups per repeating unit, which have not been assigned, but it appears that they are on primary locations.
authors.affiliation: Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Sweden.
authors.forename: P E
authors.initials: PE
authors.lastname: Jansson
authors.forename: J
authors.initials: J
authors.lastname: Lindberg
authors.forename: K M
authors.initials: KM
authors.lastname: Wimalasiri
authors.forename: M A
authors.initials: MA
authors.lastname: Dankert
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D041822:Gluconacetobacter xylinus / Q000737:chemistry / Q000378:metabolism*; D006026:Glycoside Hydrolases; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D007202:Indicators and Reagents; D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial; D006026:Glycoside Hydrolases