title: Extracellular iodophilic polysaccharide synthesized by Neisseria in human dental plaque.
abstract: Dental plaque collected from the label aspect of the anterior dentition of children harbored Neisseria that synthesized an extracellular iodophilic polysaccharide (EIP) from sucrose. Gas chromatograms of fully-acetylated EIP derivatives indicated that glucose (97%) and galactose (3%) were the only monosaccharide constituents present. The characterization of the partially-methylated alditol acetate (PMAA) derivatives of EIP indicated that it was primarily a linear 1,4 glucan (75.5%), with some 1,6 glucan (8.4%). The relative linearity of EIP (96.6%) as compared to that of amylose and glycogen was confirmed by spectrophotometric absorption studies.
mesh_terms: D002648:Child; D002849:Chromatography, Gas; D003773:Dental Plaque / Q000378:metabolism / Q000382:microbiology*; D006801:Humans; D009343:Neisseria / Q000378:metabolism*; D011135:Polysaccharides, Bacterial / Q000032:analysis / Q000096:biosynthesis*; D013696:Temperature; D013997:Time Factors
chemical_list: D011135:Polysaccharides, Bacterial