An acidic polysaccharide was obtained from Psychrobacter maritimus 3pS isolated from a Siberian cryopeg sample (Kolyma lowland). The following structure of the tetrasaccharide repeating unit of the polysaccharide was established by sugar analysis along with (1)H and (13)C NMR spectroscopy: →2)-α-L-Rhap-(1→4)-α-D-GalpNAcA-(1→3)-α-D-QuipNAc4NHb-(1→3)-β-D-QuipNAc4NHb-(1→ where D-GalNAcA indicates 2-acetamido-2-deoxy-D-galacturonic acid and d-QuiNAc4NHb indicates 2-acetamido-2,4,6-trideoxy-4-[(S)-3-hydroxybutanoyl]amino-D-glucose.
acid, bacterial polysaccharide structure, 2, 4, 4-diamino-2, 2-acetamido-2-deoxy-D-galacturonic acid, Psychrobacter maritimus, 6-trideoxy-D-glucopyranose
NCBI PubMed ID: 22925757Publication DOI: 10.1016/j.carres.2012.07.007Journal NLM ID: 0043535Publisher: Elsevier
Correspondence: annakond@gmail.com
Institutions: N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia, Institute for Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, 142290 Pushchino, Russia, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia, Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences,142290 Pushchino, Russia
Methods: 13C NMR, 1H NMR, NMR-2D, sugar analysis, ESI-MS, GLC, mild acid hydrolysis, DOC-PAGE, Smith degradation, GPC
Found