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  • Title: [Characterization of lipopolysaccharides from Ralstonia solanacearum].
    Author: Varbanets LD, Vasil'ev VN, Brovarskaia OS.
    Journal: Mikrobiologiia; 2003; 72(1):19-25. PubMed ID: 12698787.
    Abstract:
    Lipopolysaccharides (LPSs) from four strains of Ralstonia solanacearum belonging to biovar I (ICMP 6524, 8115, 5712, and 8169) were isolated and investigated. The structural components of the LPS molecule, such as lipid A, the core oligosaccharide, and O-specific polysaccharide (O-PS), were obtained after mild acid hydrolysis of the LPS preparations. In lipid A from all the LPS samples studied, 3-hydroxyhexadecanoic, 2-hydroxyhexadecanoic, tetradecanoic, and hexadecanoic fatty acids prevailed. The dominant monosaccharides of the core oligosaccharides of all of the strains studied were rhamnose, glucose, glucosamine, 2-keto-3-deoxyoctulosonic acid, and heptose. However, individual strains varied in the content of galactose, ribose, xylose, and arabinose. Three types of the O-PS structure were established, which differed in their configuration (alpha or beta), as well as in the type of the bond between glucosamine and rhamnose residues (1-->2 or 1-->3).
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