title: Structural studies of acidic polymers produced by the O23 reference strain of Serratia marcescens: presence of amide-linked glutamic acid.
abstract: The major fraction of an acidic galactoglucomannan present in lipopolysaccharide extracts from cell walls of the O23 reference strain of Serratia marcescens has the tetrasaccharide repeating-unit shown. In a minor fraction, L-glutamic acid was amide-linked to about half of the D-glucuronic acid residues. The possible contributions of the acidic polymers and a neutral polymer produced by the organism to cross-reactions with other serogroups are discussed.
authors.affiliation: School of Chemistry, University, Hull, Great Britain.
authors.forename: D
authors.initials: D
authors.lastname: Oxley
authors.forename: S G
authors.initials: SG
authors.lastname: Wilkinson
mesh_terms: D000143:Acids; D000577:Amides / Q000032:analysis*; D002240:Carbohydrate Sequence; D005971:Glutamates / Q000032:analysis*; D018698:Glutamic Acid; D008969:Molecular Sequence Data; D015394:Molecular Structure; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D012703:Serotyping; D012706:Serratia marcescens / Q000032:analysis* / Q000145:classification
chemical_list: D000143:Acids; D000577:Amides; D005971:Glutamates; D011135:Polysaccharides, Bacterial; D018698:Glutamic Acid