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Berlin Brandenburg

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  • 1
    Language: English
    In: Biomedical & Environmental Mass Spectrometry, November 1990, Vol.19(11), pp.731-745
    Description: A structural model is proposed for the surface glycolipids, or lipooligosaccharides (LOS), of gram‐negative pathogenic bacteria that colonize human mucosae, e.g. and The development of this model has involved analysis of a series of pyocin‐resistant mutants with altered LOS and other recent immunochemical and structural data. A comprehensive approach to determining the necessary structural data has been constructed that utilizes liquid secondary ion mass spectrometry, tandem mass spectrometry, methylation analysis and nuclear magnetic resonance. To prepare purified oligosaccharides for these analyses, chromatographic and chemical techniques have been developed that include high‐pH anion‐exchange chromatography of underivatized oligosaccharides and reverse‐phase chromatography after derivatization with hydrazino alkyl benzoates. The proposed LOS model has several unique features that distinguish it from models developed for the lipopolysaccharides of enteric bacteria. This information should lead to an understanding of the unique structure/function relationship of LOS and to the development of carbohydrate‐based vaccines.
    Keywords: Bakterien ; Krankheitserreger ; Lipoprotein ; Strukturanalyse ; Oberflaechenstruktur ; Immunozytochemie ; Massenspektrometrie ; Kernresonanzspektrometrie ; Ionenaustauschchromatographie ; Zellmembran ; Theoretisches Modell ; Oligosaccharid ; Biology ; Anatomy & Physiology;
    ISSN: 0887-6134
    E-ISSN: 1096-9888
    E-ISSN: 23763868
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