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The chemical composition of cell-wall lipopolysaccharides from Moraxella duplex and Micrococcus calco-aceticus

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1139/m70-001
AuteurRechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada
FormatTexte, Article
Résumé
Cell wall lipopolysaccharides (LPS) prepared from oxidase-positive Moraxella duplex and from oxidase-negative Micrococcus calco-aceticus (a presumptive moraxella) contained D-glucose, D-galactose, glucosamine, galactosamine, lipid A, ethanolamine, fatty acids, phosphate, and protein. The lipid A moieties prepared from the LPS fractions were composed primarily of hexosamines, ethanolamine, fatty acids, and phosphate with minor amounts of the other LPS constituents. The LPS from M. duplex and M. calco-aceticus had the same neutral sugar composition but differed markedly in their hexosamine composition. Galactosamine was the major hexosamine component of M. duplex; also present was an unidentified amino sugar and a small amount of mannosamine. In contrast, glucosamine was the major hexosamine component of M. calco-aceticus with a lesser amount of galactosamine and no mannosamine. The presence of galactosamine as the major component of the lipid A of M. duplex suggests that this fraction has a novel structure which differs from the poly-D-glucosamine 'backbone' structure assigned to lipid A. The fatty acid compositions of the lipid A from the two species were mutually similar and consisted mainly of hydroxylauric, hydroxymyristic, and C17-cyclopropane fatty acids. The LPS fractions of the two organisms studied resemble that of Neisseria catarrhalis and differ from those of the true neisserias.
Date de publication
Dans
  • Canadian Journal of Microbiology 16 (1970) : 1–8.
Langueanglais
Numéro du CNRCADAMS1970A
NRCC 11091
Numéro NPARC9364223
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Identificateur de l’enregistrement0e2ce716-367f-4960-bc3a-f4e12c5aa324
Enregistrement créé2009-07-10
Enregistrement modifié2020-03-13
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