Structure of O-specific polysaccharide from Pseudoalteromonas nigrifaciens strain KMM 161 |
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Authors: | Gorshkova R P Nazarenko E L Zubkov V A Ivanova E P Gorshkova N M Isakov V V |
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Institution: | Pacific Institute of Bioorganic Chemistry, Far East Branch of the Russian Academy of Sciences, Vladivostok, 690022, Russia. elnaz@piboc.dvo.ru |
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Abstract: | On mild acid degradation of the lipopolysaccharide of the marine microorganism Pseudoalteromonas nigrifaciens KMM 161 an O-specific polysaccharide containing D-galactose, 2-acetamido-2-deoxy-D-glucose, 3,6-dideoxy-3-(4-hydroxybutyramido)-D-galactose, and 2-acetamido-2-deoxy-L-guluronic acid residues was obtained. From the results of Smith degradation, O-deacetylation of the polysaccharide, and NMR spectroscopy the following structure of the tetrasaccharide repeating unit of the O-specific polysaccharide was established see reaction]. It should be noted that the same structure occurs in the antigenic polysaccharide of Pseudoalteromonas nigrifaciens KMM 158 described earlier as Alteromonas macleodii 2MM6. |
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Keywords: | Pseudoalteromonas nigrifaciens O-specific polysaccharide 4-hydroxybutanoic acid NMR spectroscopy |
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