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Carbohydr Res. 2004 Jun 1;339(8):1467-73.

Structural elucidation of the extracellular and cell-wall teichoic acids of Staphylococcus epidermidis RP62A, a reference biofilm-positive strain.

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1
Laboratoire de Recherche sur les Biomatériaux et les Biotechnologies, Université du Littoral-Côte d'Opale, INSERM IR2 Bassin Napoléon BP 120, F-62327 Boulogne-sur-mer, France.

Abstract

The ability to adhere to artificial surfaces and form biofilms is considered as a virulence factor of Staphylococcus epidermidis, one of the major causes of nocosomial infections, especially those related to implanted medical devices. Cell-wall teichoic acid is known to play an important role in biofilm formation of staphylococci. The structure of the cell wall and extracellular teichoic acids of S. epidermidis RP62A, a reference biofilm-positive strain, was studied by NMR spectroscopy and capillary electrophoresis-mass spectrometry. Their structures were found to be a (1-->3)-linked poly(glycerol phosphate), substituted at the 2-position of glycerol residues with alpha-Glc, alpha-GlcNAc, D-Ala and alpha-Glc6Ala. D-Alanyl acylation of a sugar hydroxyl group seems to be a novel structural feature of teichoic acids from staphylococci.

PMID:
15178389
DOI:
10.1016/j.carres.2004.03.017
[Indexed for MEDLINE]

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