Simple Protocol to Purify Cell Wall Polysaccharide from Gram-Positive Bacteria and Assess Its Structural Integrity

  • Irina Sadovskaya
  • Yann GuérardelEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1954)


Cell wall polysaccharides (CWPS), which are usually covalently bound to the peptidoglycan and are closely associated with the cell wall, are considered as ubiquitous components of the cell envelope of gram-positive bacteria and play an important role as mediators of bacterial interactions with the environment. Here, we describe a simple method for purifying CWPS by extraction of bacterial cells with consecutive acid treatments. Purified CWPS are obtained by gel-filtration chromatography following treatment with HF. We also provide the methodology to easily assess the integrity of CWPS using high-resolution magic-angle spinning (HR-MAS) NMR.

Key words

Cell wall polysaccharide Purification HR-MAS NMR 



We acknowledge Douwe VanSideren (School of Microbiology, University College Cork, Ireland) and Marie-Pierre Chapot Chartier (Micalis Institute, INRA, France) for the use of Lactococcus lactis MG1363 and SK11. This work was supported by French ANR project “Lactophages” (ANR-11-BSV8-004-01).


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Équipe BPA, Univ. Littoral Côte d’Opale, convention ANSES, EA 7394, ICV Charles VioletteUniv. Lille, Univ. Artois, INRA, ISA F-62321Boulogne-sur-merFrance
  2. 2.Univ. Lille, CNRS, UMR 8576 – UGSF - Unité de Glycobiologie Structurale et FonctionnelleLilleFrance

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