Biogenesis and function of type IV pili in pseudomonas species

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Show simple item record Whitchurch, CB 2010-05-28T09:37:57Z 2006
dc.identifier.citation Pseudomonas, 2006, 4 pp. 139 - 188
dc.identifier.isbn 0387288341
dc.identifier.isbn 9780387288345
dc.identifier.other B1UNSUBMIT en_US
dc.description.abstract Type IV pili or fimbriae are non-flagellar, filamentous surface appendages that are associated with a number of biological activities in bacteria. These processes include a form of surface translocation termed twitching motility; bacteriophage sensitivity; attachment to biotic (bacteria, plant, animal) and abiotic surfaces; biofilm development; and the uptake of naked DNA by natural transformation. Many of these biological functions are reliant on the ability of these structures to extend and retract. Type IV pili/fimbriae are found throughout the eubacteria. They are produced by many species of Gram-negative bacteria and have been most extensively studied in Pseudomonas aeruginosa, Neisseria gonorrhoeae, N. meningitidis, Dichelobacter nodosus, Moraxella bovis, Myxococcus xanthus, and Synechocystis species PCC 6803, enteropathogenic Eschericia coli (EPEC) and Vibrio cholerae98,99,143 Type IV pili/fimbriae are also produced by some Gram-positive bacteria including Ruminococcus albus163,168 and probably Streptococcus sanguis100 though evidence for the latter awaits confirmation via molecular analyses. The nomenclature "type IV" is derived from the classification scheme outlined by Ottowin 1975 inwhich he grouped non-flagellar filamentous structures into six types based largely on morphological characteristics156 Interestingly, throughout this nomenclature system Ottow reserved the use of the term pili to specifically refer to conjugative sex pili and used the term "fimbriae" for all other non-flagellar filamentous surface organelles. The term "fimbriae" was also favored by other investigators72,82 however, historically, the terms "pili" and "fimbriae" have been used interchangeably. In reference to the non-flagellar filamentous structures thatwere classified by Ottowas "Group IV," the terminology "type IV pili" and its abbreviation "tfp" have become very much the vogue in recent years and will be adopted in this review. As defined by Ottow (1975) type IV pili are "⋯ flexible, rod-like, polarly inserted fimbriae." The tfp of P. aeruginosa were amongst the first of this class described in bacteria20,21,25,82,104,226 P. aeruginosa tfp have a diameter of 5-6 nm25,50,77,226 and a hollow core of 1.2 nm.77 Due to their retractile nature, the length of these structures varies significantly, but on average are about 1-4 μm in length22,24,27 although they can range in length up to 10 μm25,226 A number of studies have examined tfp production by P. aeruginosa under different culture conditions and have shown that P. aeruginosa tfp are produced throughout plate culture22,119,209,226 in logarithmic broth culture with gentle agitation22,25,226 and by stationary phase bacteria when cultured without aeration or with only gentle agitation22,119,209,226 whereas vigorously shaken stationary phase P. aeruginosa cultures do not produce detectable tfp22,119,209,226 Type IV pili have also been identified in other Pseudomonas species including P. syringae180-183 P. stutzeri84,98 and P. fluorescens138 (see Section 2.6). Historically, however, P. aeruginosa has served as one of the primary model organisms for the investigation of tfp and its associated functions in bacteria. It is for this reason that this chapter will largely focus on the tfp of P. aeruginosa. This chapter will review the current state of knowledge relating to the structure, biogenesis, and function of the tfp of the genus Pseudomonas and will also highlight advances made in the study of these structures in other type IV piliated bacteria.
dc.publisher Springer US
dc.relation.isbasedon 10.1007/0-387-28881-3_6
dc.title Biogenesis and function of type IV pili in pseudomonas species
dc.type Chapter
dc.parent Pseudomonas
dc.journal.volume 4
dc.journal.number en_US
dc.publocation Netherlands en_US
dc.identifier.startpage 139 en_US
dc.identifier.endpage 188 en_US SCI.Institute for Biotechnology of Infectious Diseases en_US
dc.conference Verified OK en_US
dc.for 0605 Microbiology
dc.personcode 103745
dc.percentage 100 en_US Microbiology en_US
dc.classification.type FOR-08 en_US
dc.edition 1 en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords adhesion
dc.description.keywords biofilm
dc.description.keywords fimbriae
dc.description.keywords infection
dc.description.keywords natural transformation
dc.description.keywords twitching motility
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - i3
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history Closed (ID: 3)

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