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Structural Complexes of Cationic Polysoap-Phospholipid

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Microdomains in Polymer Solutions

Part of the book series: Polymer Science and Technology ((NISS,volume 30))

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Abstract

The interaction between an acidic phospholipid, the natural (wheat) phosphatidylinositolmonophosphate PI and a linear cationic polysoap the poly(2-methyl-5-vinyl-hexylpyridinium bromide) PVPC6 has been studied with mixed spread monolayers and with hydrated (40%, w/w) mixed bilayers. The “electrostatic” interaction between PI and PVPC6 involves monolayer condensation and affects the bilayers hydration. In addition, the free energy of the bilayers structural water is modulated by this interaction.

Analysis of the mixed PI + PVPC6 monolayer composition demonstrated that the “electrostatic” interaction is in fact the result of an ion exchange reaction between the monolayer constituents. This reaction modulates the monolayer and the multibilayer properties considered. It is stressed that the multibilayer hydration is relevant to biological membrane stability, adhesion or fusion.

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References

  1. Homma, I.; Ter-Minassian-Saraga, L. “Electrical Phenomena at the Biological Membrane Level”; Elsevier Sci. Publ.: Amsterdam, pp. 273–286, 1977.

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  9. Note added in proof. The same conclusion has been arrived at by Sixl, F.; Galla, H-J. Biochim. Biophys. Acta 1982, 693, 466–478, who used the approach described in2 for studying the interaction between an acidic phospholipid and a low molecular weight, postively charged protein polymixin. Therefore PVPC6 is a reasonable model for the study of protein—phospholipid interaction.

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Author information

Authors and Affiliations

  1. UER Biomédicale, Physico-Chimie des Surfaces et des Membranes Equipe de Recherche du CNRS associée à l’Université Paris V, 45 rue des Saints-Pères, 75270, Paris cedex 06, France

    Lisbeth Ter-Minassian-Saraga

Authors
  1. Lisbeth Ter-Minassian-Saraga
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Editor information

Editors and Affiliations

  1. Indiana University-Purdue University at Indianapolis, Indianapolis, Indiana, USA

    Paul Dubin

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© 1985 Plenum Press, New York

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Ter-Minassian-Saraga, L. (1985). Structural Complexes of Cationic Polysoap-Phospholipid. In: Dubin, P. (eds) Microdomains in Polymer Solutions. Polymer Science and Technology, vol 30. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2123-1_18

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  • DOI: https://doi.org/10.1007/978-1-4613-2123-1_18

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4612-9255-5

  • Online ISBN: 978-1-4613-2123-1

  • eBook Packages: Springer Book Archive

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