Screening of c-di-GMP-Regulated Exopolysaccharides in Host Interacting Bacteria

  • Jochen Schmid
  • Broder Rühmann
  • Volker Sieber
  • Lorena Romero-Jiménez
  • Juan Sanjuán
  • Daniel Pérez-MendozaEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1734)


Bacterial exopolysaccharides (EPS) often confer a survival advantage by protecting the cell against abiotic and biotic stresses, including host defensive factors. They are also main components of the extracellular matrix involved in cell–cell recognition, surface adhesion and biofilm formation. Biosynthesis of a growing number of EPS has been reported to be regulated by the ubiquitous second messenger c-di-GMP, which promotes the transition to a biofilm mode of growth in an intimate association with the eukaryotic host. Here we describe a strategy based on the combination of an approach to artificially increase the intracellular level of c-di-GMP in virtually any gram-negative bacteria with a high throughput screening (HTS) for the identification of monosaccharide composition and carbohydrate fingerprinting of novel EPS, or modified variants, that can be involved in host–bacteria interactions.

Key words

Exopolysaccharide c-di-GMP High Throughput Screening Carbohydrate Fingerprint Biofilm 


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Copyright information

© Springer Science+Business Media, LLC 2018

Authors and Affiliations

  • Jochen Schmid
    • 1
  • Broder Rühmann
    • 1
  • Volker Sieber
    • 1
  • Lorena Romero-Jiménez
    • 2
  • Juan Sanjuán
    • 2
  • Daniel Pérez-Mendoza
    • 2
    Email author
  1. 1.Chair of Chemistry of Biogenic ResourcesTechnical University of MunichStraubingGermany
  2. 2.Dpto. Microbiología del Suelo y Sistemas SimbióticosEstación Experimental del Zaidín, CSICGranadaSpain

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