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  • 1
    Electronic Resource
    Electronic Resource
    Lipid A with 2,3-diamino-2,3-dideoxy-glucose in lipopolysaccharides from slow-growing members of Rhizobiaceae and from “Pseudomonas carboxydovorans” (1989)
    Springer
    Archives of microbiology 151 (1989), S. 111-116 
    Details
    ISSN: 1432-072X
    Keywords: Lipid A ; 2,3-Diamino-2,3-dideoxy-glucose ; Slow-growing rhizobia ; Fast growing rhizobia ; Phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Lipid A's from two Bradyrhizobium species and from the phylogenetically closely related species “Pseudomonas carboxydovorans” were found to contain 2,3-diamino-2,3-dideoxy-glucose as lipid A backbone sugar. In contrast, three representatives of the genus Rhizobium, as well as the phylogenetically related species Agrobacterium tumefaciens, contain solely glucosamine as lipid A backbone sugar. These findings suppor independent studies on the phylogenetical relatedness based on 16S rRNA-data of the genus Bradyrhizobium with “Pseudomonas carboxydovorans“ and Rhodopseudomonas palustris, which form a tight phylogenetical cluster and which all contain the 2,3-diamino-2,3-dideoxy-glucose-containing lipid A. The relatedness of these species to the glucosamine-containing species of the genus Rhizobium and to Agrobacterium tumefaciens is rather distant as documented by 16S rRNA studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00414423
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  • 2
    Electronic Resource
    Electronic Resource
    Lipopolysaccharides of Thiobacillus species containing lipid A with 2,3-diamino-2,3-dideoxyglucose (1987)
    Springer
    Archives of microbiology 149 (1987), S. 106-111 
    Details
    ISSN: 1432-072X
    Keywords: Thiobacillus ferrooxidans ; Thiobacillus thiooxidans ; Thiobacillus novellus ; Thiobacillus sp. ; Lipid A ; Lipopolysaccharide ; 2,3-Diamino-2,3-dideoxyglucose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Lipopolysaccharides were isolated from two strains of Thiobacillus ferrooxidans and one strain each of Thiobacillus thiooxidans, Thiobacillus novellus and Thiobacillus sp. IFO 14570. Neutral sugars, 2-keto-3-deoxyoctonate, fatty acids and the rare 2,3-diamino-2,3-dideoxyglucose were detected in all lipopolysaccharides. Lipopolysaccharides of both T. ferrooxidans strains contained l-glycero-d-manno-heptose, whereas that of T. thiooxidans contained both l-glycero-d-manno-heptose and d-glycero-d-manno-heptose. On the other hand, heptoses were absent in lipopolysaccharides of T. novellus and Thiobacillus sp. IFO 14570. Lipid A of T. ferrooxidans and T. thiooxidans contained both glucosamine and 2,3-diamino-2,3-dideoxyglucose, in contrast, lipid A of T. novellus and the Thiobacillus sp. IFO 14570 most likely contain only 2,3-diamino-2,3-dideoxyglucose as backbone sugar. Deoxycholate polyacrylamide gel electrophoresis revealed S-type character for all lipopolysaccharides studied. The significance of the lipopolysaccharide composition for taxonomic and phylogenetic questions with regard to thiobacilli is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00425074
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  • 3
    Electronic Resource
    Electronic Resource
    Lipopolysaccharides in four strains of the unicellular cyanobacterium Synechocystis (1980)
    Springer
    Archives of microbiology 127 (1980), S. 217-222 
    Details
    ISSN: 1432-072X
    Keywords: Synechocystis ; Lipopolysaccharide ; Lipid A ; O-Methyl sugars ; Chemotypes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Lipopolysaccharides were found in four strains of Synechocystis. Depending on the strain, they were extracted into either the water or into the phenol phase of phenol-water extracts. The lipopolysaccharides of all four strains contain fucose, mannose, galactose, glucose and glucosamine. l-Glycero-d-mannoheptose and 2-keto-3-deoxyoctonate are lacking. The strain-specific sugars are dominated by O-methyl sugars in three of the four strains: Synechocystis PCC 6803 contains 2,3-di-O-methyl-fucose, 2-O-methyl-fucose and 2-O-methylxylose. In Synechocystis PCC 6807 a 6-O-methylheptose and 2-O-methyl-mannose, in Synechocystis PCC 6308 2-O-methyl-mannose was identified. Lipid A, although difficult to be split off from the polysaccharide moiety, is indicated in all four strains by the presence of β-hydroxypalmitic and β-hydroxymyristic acids and of glucosamine. In addition, a branched β-hydroxypentadecanoic acid (anteiso) was found. The phosphorus content of the four lipopolysaccharides amounts to less than 0.3% of dry weight. The lipopolysaccharides from Synechocystis show O-specific activity. Their reactivity in homologous O-antisera, however, is low when tested by passive hemagglutination. In immunoelectrophoresis, no migration of lipopolysaccharide was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00427196
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  • 4
    Electronic Resource
    Electronic Resource
    Chemical composition of the lipopolysaccharides of Rhodobacter sulfidophilus, Rhodopseudomonas acidophila, and Rhodopseudomonas blastica (1985)
    Springer
    Archives of microbiology 143 (1985), S. 32-36 
    Details
    ISSN: 1432-072X
    Keywords: Lipopolysaccharide ; Lipid A ; Rhodobacter sulfidophilus ; Rhodopseudomonas acidophila ; Rhodopseudomonas blastica ; Phototrophic bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The lipopolysaccharides of Rhodobacter sulfidophilus and the two budding species Rhodopseudomonas acidophila and Rhodopseudomonas blastica were isolated and chemically analyzed. The all have a lipid A backbone structure with glucosamine as the only amino sugar. The lipid A's of Rb. sulfidophilus and Rps. blastica contain phosphate, their fatty acids are characterized by ester-linked, unsubstituted 3-OH-10:0 and amide-linked 3-OH-14:0 (Rb. sulfidophilus) or 3-oxo-14:0 (Rps. blastica). Lipid A of Rps. acidophila is free of phosphate and contains the rare 3-OH-16:0 fatty acid in amide linkage. The lipopolysaccharides of all three species contain 2-keto-3-deoxy-octonate (KDO) but are devoid of heptoses. Neutral sugars with the exception of glucose are lacking in the lipopolysaccharide of Rb. sulfidophilus. This shows a high galacturonic acid content. The lipopolysaccharides of Rps. acidophila and Rps. blastica have neutral sugar spectra indicative for typical O-chains (rhamnose, mannose, galactose, glucose in both species, and in Rps. blastica additionally 2-O-methyl-6-deoxy-hexose). The taxonomic value of the data is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00414764
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  • 5
    Electronic Resource
    Electronic Resource
    Chemical composition of the lipopolysaccharides of Ectothiorhodospira shaposhnikovii, Ectothiorhodospira mobilis, and Ectothiorhodospira halophila (1992)
    Springer
    Archives of microbiology 157 (1992), S. 499-504 
    Details
    ISSN: 1432-072X
    Keywords: Cell wall ; Ecothiorhodospira shaposhnikovii ; Ectothiorhodospira mobilis ; Ectothiorhodospira halophila ; Halophilic bacteria ; Lipopolysaccharide ; Lipid A ; Lipid ADAG ; “Mixed” lipid A ; Phototrophic bacteria ; Phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Lipopolysaccharides were isolated from the moderate halophilic Ectothiorhodospira shaposhnikovii slight to and Ectothiorhodospira mobilis and from the extremely halophilic Ectothiorhodospira halophila by the hot phenol-water and purified by the phenol-chloroform-petroleum ether methods. The isolated lipopolysaccharides of all three species contained 3-deoxy-d-manno-octulosonic acid and d-glycero-d-mannoheptose indicating the existence of a core. They contained additionally glucose and uronic acids (E. shaposhnikovii and E. mobilis) or glucose, uronic acids and threonine (E. halophila). Sodium deoxycholate gel-electrophoresis of the three lipopolysaccharides, each showing only one major band, indicated R-type character of the lipopolysaccharides of the three Ectothiorhodospira species. The lipid A fractions of the lipopolysaccharides from E. shaposhnikovii and E. mobilis represented phosphorylated “mixed” lipid A types with both 2,3-diamino-2,3-dideoxy-d-glucose and d-glucosamine. The lipid A from E. halophila contained also phosphate and 2,3-diamino-2,3-dideoxy-d-glucose but only traces of d-glucosamine, which would indicated lipid ADAG. The fatty acid spectra were characterized by amide-bound 3-OH-10:0 and 3-OH-12:0 (E. shaposhnikovii), 3-OH-10:0 (E. mobilis), or 3-OH-10:0,3-OH-14:0, and 3-oxo-14-0 (E. halophila). The predominant ester-bound fatty acids were 14:0 and 16:0 (E. shaposhnikovii and E. mobilis), or 12:0 and 14:1 (E. halophila).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276769
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