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Cited by 386

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Genetic and biochemical analyses of the Pseudomonas aeruginosa Psl exopolysaccharide reveal overlapping roles for polysaccharide synthesis enzymes in Psl and LPS production

Open access
Byrd, Matthew S., Sadovskaya, Irina, Vinogradov, Evgueny, Lu, Haiping, Sprinkle, April B., Richardson, Stephen H., Ma, Luyan, Ralston, Brad, Parsek, Matthew R., Anderson, Erin M., Lam, Joseph S., Wozniak, Daniel J.·2009·Molecular Microbiology

Abstract

Summary: Exopolysaccharides contribute significantly to attachment and biofilm formation in the opportunisitc pathogen Pseudomonas aeruginosa. The Psl polysaccharide, which is synthesized by the p olysaccharide s ynthesis l ocus (psl), is required for biofilm formation in non‐mucoid strains that do not rely on alginate as the principal biofilm polysaccharide. In‐frame deletion and complementation studies of individual psl genes revealed that 11 psl genes, pslACDEFGHIJKL, are required for Psl production and surface attachment. We also present the first structural analysis of the psl‐dependent polysaccharide, which consists of a repeating pentasaccharide containing d‐mannose, d‐glucose and l‐rhamnose: image In addition, we identified the sugar nucleotide precursors involved in Psl generation and demonstrated the requirement for GDP‐d‐mannose, UDP‐d‐glucose and dTDP‐l‐rhamnose in Psl production and surface attachment. Finally, genetic analyses revealed that wbpW restored Psl production in a pslB mutant and pslB promoted A‐band LPS synthesis in a wbpW mutant, indicating functional redundancy and overlapping roles for these two enzymes. The structural and genetic data presented here provide a basis for further investigation of the Psl proteins and potential roles for Psl in the biology and pathogenesis of P. aeruginosa.

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Metadata

Authors
Byrd, M. S., Sadovskaya, I., Vinogradov, E., Lu, H., Sprinkle, A. B., Richardson, S. H., Ma, L., Ralston, B., Parsek, M. R., Anderson, E. M., Lam, J. S., & Wozniak, D. J.
Venue
Molecular Microbiology
Publisher
Wiley
Published
2009-08
Volume
73
Issue
4
Pages
622-638
ISSN
  • 0950-382X (ISSN-L)
  • 1365-2958
OpenAlex
W1969537603
Cited by
386
References
50
FWCI
5.52
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Genetic and biochemical analyses of the Pseudomonas aeruginosa Psl exopolysaccharide reveal overlapping roles for polysaccharide synthesis enzymes in Psl and LPS production. https://app.cochat.ai/papers/10.1111/j.1365-2958.2009.06795.x
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Byrd, M. S., Sadovskaya, I., Vinogradov, E., Lu, H., Sprinkle, A. B., Richardson, S. H., Ma, L., Ralston, B., Parsek, M. R., Anderson, E. M., Lam, J. S., & Wozniak, D. J. (2009). Genetic and biochemical analyses of the Pseudomonas aeruginosa Psl exopolysaccharide reveal overlapping roles for polysaccharide synthesis enzymes in Psl and LPS production. Molecular Microbiology. https://doi.org/10.1111/j.1365-2958.2009.06795.x

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