Journal
JOURNAL OF BACTERIOLOGY
Volume 182, Issue 4, Pages 974-982Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.182.4.974-982.2000
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The structure of the viscous extracellular polysaccharide (glycan) of desiccation-tolerant Nosfoc commune DRH-1 was determined through chromatographic and spectroscopic methods. The polysaccharide is novel in that it possesses a 1-4-linked xylogalactoglucan backbone with D-ribofuranose and 3-O-[(R)-1-carboxyethyl] D-glucuronic acid (nosturonic acid) pendant groups. The presence of D-ribose and nosturonic acid as peripheral groups is unusual, and their potential roles in modulating the rheological properties of the glycan are discussed. Nosturonic acid was present in the glycans of N, commune from diverse geographic locations, suggesting that this uronic acid is an integral component of this cosmopolitan anhydrophile.
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