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Category: Environmental Microbiology
Bacterial Extracellular Polysaccharides in Biofilm Formation and Function, Page 1 of 2
< Previous page | Next page > /docserver/preview/fulltext/10.1128/9781555817466/9781555817459_Chap11-1.gif /docserver/preview/fulltext/10.1128/9781555817466/9781555817459_Chap11-2.gifAbstract:
The ability to construct and maintain a structured multicellular bacterial community depends critically on the production of extracellular matrix components ( 1 , 2 ). While the biofilm matrix may be composed of various molecules, the focus of this chapter is on the extracellular polysaccharides (PSs) important for biofilm formation.
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Adapted representative chemical structures of polysaccharides which participate in biofilm formation including (A) polysaccharide intercellular adhesin (PIA), (B) Psl, (C) alginate, capsular polysaccharide (CPS) from (Di) E. coli and (Dii) S. pneumoniae, (E) levan, (F) cellulose, and (G) colanic acid. Brackets depict repeating units.
Colony phenotypes conferred upon expression or overexpression of PS by representative bacteria. (A) PS intercellular adhesion producing Staphylococcus aureus. Reprinted from World Journal of Microbiology and Biotechnology ( 214 ) with permission from the publisher. (B) Pel producing Pseudomonas aeruginosa (ΔwspFΔpsl). Reprinted from Molecular Microbiology ( 215 ) with permission from the publisher. (C) Psl producing P. aeruginosa (ΔwspFΔpel). Reprinted from Molecular Microbiology ( 215 ) with permission from the publisher. (D) Alginate overproducing P. aeruginosa (mucA22). Not previously published. Credit: Daniel Wozniak. (E) Colanic acid producing Escherichia coli. Reprinted from PLoS One ( 216 ) with permission from the publisher. (F) VPS producing rugose variant of Vibrio cholerae. Reprinted from The Proceedings of the National Academy of Sciences of the USA ( 66 ) with permission from the publisher. (G) EPS producing Bacillus subtilis. Reprinted from The Proceedings of the National Academy of Sciences of the USA ( 217 ) with permission from the publisher. (H) Cellulose producing E. coli (csgD::cm). Reprinted from The Journal of Medical Microbiology ( 218 ) with permission from the publisher.