Biological activity of lipopolysaccharides of gram-negative bacteria

Zdorovenko, Evelina L.; Позур, В. К.; Kucherenko, N.E.

doi:10.7124/bc.000550

Biopolym. Cell

2000

DOI: 10.7124/bc.000550

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Biological activity of lipopolysaccharides of gram-negative bacteria

Evelina L. Zdorovenko

В. К. Позур

N.E. Kucherenko

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2012

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“…Lipopolysaccharide (LPS, O antigen) is the obligatory component of the cell wall outer membrane in gram negative bacteria; it is composed of three structurally different moieties: lipid A (LA), core oligosaccharide, and O specific polysaccharide (OPS). Capsular glycans of bacteria are composed of LPS [4][5][6]; some bacteria are able to excrete LPS into the medium [7]. In many soil micro organisms, CPS are involved not only in cell attach ment to the root surface but also in the recognition of the host plant.…”

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confidence: 99%

Capsular and extracellular polysaccharides of the diazotrophic rhizobacterium Herbaspirillum seropedicae Z78

et al. 2012

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The diazotrophic endophyte Herbaspirillum seropedicae Z78 was shown to possess a capsule con taining two high molecular weight glycolipids, one of which was of a lipopolysaccharide nature. These gly colipids differed considerably in the fatty acid composition of their lipid components. The polysaccharide moiety of these glycans was composed of glucose, galactose, glucosamine, galactosamine, and a noncarbo hydrate component, butanetetraol. In the culture liquid of H. seropedicae Z78, an extracellular polysaccha ride and an extracellular form of lipopolysaccharide were revealed. Fatty acid composition of the extracellular lipopolysaccharide differed from that of the capsular glycoconjugates; the polysaccharide moiety of exogly cans contained only neutral sugars (mannose, glucose, and galactose) and a tetraatomic alcohol, butanetet raol. It is assumed that structural diversity of polysaccharide containing polymers at the surface of H. serope dicae Z78 cells is conditioned by their different roles in plant colonization and formation of efficient symbi osis.

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Capsular and extracellular polysaccharides of the diazotrophic rhizobacterium Herbaspirillum seropedicae Z78

et al. 2012

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Biological activity of lipopolysaccharides of gram-negative bacteria

Cited by 1 publication

References 65 publications

Capsular and extracellular polysaccharides of the diazotrophic rhizobacterium Herbaspirillum seropedicae Z78

Capsular and extracellular polysaccharides of the diazotrophic rhizobacterium Herbaspirillum seropedicae Z78

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