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Polysaccharides guluronic acid-containing

Formation of L-guluronic acid, a component of the alginic acid-like polysaccharide produced by P. aeruginosa and Azotobacter vinelandii, requires special comment. In this case, a polymer built from /3-(l- 4)-linked D-mannosyluronic acid residues serves as an intermediate in the biosynthesis.204,205 Part of the D-mannosyluronic acid residues in the polymer is subjected to an epimerization at C-5 catalyzed by an exocellular enzyme of the micro-organism,205-207 producing a polysaccharide composed of structural blocks that contain only D-mannosyluronic acid or only l-gulosyluronic acid residues, as well %s some having both. The mechanism of the epimerization remains unclear. [Pg.297]

See other pages where Polysaccharides guluronic acid-containing is mentioned: [Pg.165]    [Pg.105]    [Pg.233]    [Pg.353]    [Pg.281]    [Pg.159]    [Pg.112]    [Pg.173]    [Pg.8]    [Pg.6]    [Pg.296]    [Pg.185]    [Pg.187]    [Pg.593]    [Pg.425]    [Pg.277]    [Pg.25]    [Pg.348]    [Pg.116]    [Pg.234]    [Pg.253]    [Pg.601]    [Pg.240]    [Pg.265]    [Pg.540]    [Pg.32]    [Pg.134]    [Pg.181]    [Pg.1063]    [Pg.197]    [Pg.1303]    [Pg.1315]    [Pg.623]    [Pg.247]    [Pg.255]    [Pg.110]   
See also in sourсe #XX -- [ Pg.425 ]



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Acidic polysaccharides

Acids containing

Guluronic acid

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