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Journal of Dental Research, Vol 61, 627-631, Copyright © 1982 by International & American Associations for Dental Research Online Journals

ARTICLES

Extracellular iodophilic polysaccharide synthesized by Neisseria in human dental plaque

J. D. Ruby, R. E. Shirey, V. F. Gerencser and D. A. Stelzig

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.




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