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HandWiki. Chaperone-Usher Fimbriae. Encyclopedia. Available online: https://encyclopedia.pub/entry/34514 (accessed on 25 September 2026).
HandWiki. Chaperone-Usher Fimbriae. Encyclopedia. Available at: https://encyclopedia.pub/entry/34514. Accessed September 25, 2026.
HandWiki. "Chaperone-Usher Fimbriae" Encyclopedia, https://encyclopedia.pub/entry/34514 (accessed September 25, 2026).
HandWiki. (2022, November 15). Chaperone-Usher Fimbriae. In Encyclopedia. https://encyclopedia.pub/entry/34514
HandWiki. "Chaperone-Usher Fimbriae." Encyclopedia. Web. 15 November, 2022.
Chaperone-Usher Fimbriae
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The content is sourced from: https://handwiki.org/wiki/Biology:Chaperone-Usher_fimbriae

Chaperone-usher fimbriae (CU) are linear, unbranching, outer-membrane pili secreted by Gram-negative bacteria through the chaperone-usher system rather than through type IV secretion or extracellular nucleation systems. These fimbriae are built up out of modular pilus subunits, which are transported into the periplasm in a Sec dependent manner. Chaperone-usher secreted fimbriae are important pathogenicity factors facilitating host colonisation, localisation and biofilm formation in clinically important species such as UPEC (uropathogenic Escherichia coli) and Pseudomonas aeruginosa.

pili biofilm formation periplasm

References

  1. Busch A and Waksman G (2012). "Chaperone-usher pathways:diversity and pilus assembly mechanism". Philosophical Transactions of the Royal Society of London B 367: 1112–1122. doi:10.1098/rstb.2011.0206. PMID 22411982.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3297437
  2. Hultgren S.J and Waksman G (2009). "Structural biology of the chaperone-usher pathway of pilus biogenesis". Nature Reviews Microbiology 7 (11): 765–774. doi:10.1038/nrmicro2220. PMID 19820722.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3790644
  3. "Mechanism of fibre assembly through the chaperone-usher pathway". EMBO Reports 7: 734–738. 2006. doi:10.1038/sj.embor.7400722. PMID 16767077.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1500831
  4. "Crystal structure of the FimD usher bound to its cognate FimC-FimH substrate". Nature 474: 49–53. 2011. doi:10.1038/nature10109. PMID 21637253.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3162478
  5. "Structural basis of chaperone function and pilus biogenesis". Science 285 (5430): 1058–1061. 1999. doi:10.1126/science.285.5430.1058. PMID 10446050.  https://dx.doi.org/10.1126%2Fscience.285.5430.1058
  6. "Crystal structure of the P-pilus rob subunit PapA". PLOS ONE 3: e73. 2007. doi:10.1371/journal.ppat.0030073. PMID 17511517.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1868955
  7. "Evolution of the chaperone/usher assembly pathway: fimbrial classification goes Greek". Microbiology and Molecular Biology Reviews 71: 551–575. 2007. doi:10.1128/MMBR.00014-07. PMID 18063717.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2168650
  8. "Urinary tract infections of Escherichia coli strains of chaperone-usher system". Polish journal of microbiology 60: 279–285. 2011. 
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