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Conformation and Supramolecular Structure of Lipid A

  • Klaus Brandenburg
  • Ulrich Seydel
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 667)

Abstract

In recent years, lipid A as ‘endotoxic principle’ of bacterial lipopolysaccharide (LPS) and derivatives thereof have become increasingly important in the field of biomedical application such as for vaccination or as therapeutical, e. g., anti-tumor agent. For an understanding of these biological processes, however, a basic physicochemical characterization of lipid A and lipid A-like structures is a necessary prerequisite. This includes the determination of parameters like critical micellar concentration, the type of aggregate structure, the molecular conformation, the gel to liquid crystalline phase behaviour, and theoretical approaches like molecular modelling. In this chapter, data from literature are summarized showing that the unusual chemical structure of lipid A-type molecules is connected with a very complex structural polymorphism, which is sensitively dependent on the particular chemical primary structure, particular on the acylation pattern and on the number of phosphate groups at the diglucosamine backbone.

Keywords

Acyl Chain Molecular Conformation Aggregate Structure Critical Aggregation Concentration Conical Conformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Landes Bioscience and Springer Science+Business Media 2009

Authors and Affiliations

  1. 1.Division of Biophysics Research Center BorstelLeibniz-Center for Medicine and BiosciencesBorstelGermany

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