Recombination Activity of a Distinctive Integron-Gene Cassette System Associated with Pseudomonas stutzeri Populations in Soil

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Show simple item record Holmes, AJ Holley, MP Mahon, A Nield, BS Gillings, M Stokes, H 2010-05-28T09:45:00Z 2003-01
dc.identifier.citation Journal Of Bacteriology, 2003, 185 (3), pp. 918 - 928
dc.identifier.issn 0021-9193
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract Class 1 integrons have strongly influenced the evolution of multiple antibiotic resistance. Diverse integrons have recently been detected directly in a range of natural environments. In order to characterize the properties of these environmental integrons, we sought to isolate organisms containing integrons from soils, which resulted in the isolation of Pseudomonas stutzeri strain Q. Further isolation efforts targeted at this species resulted in recovery of two other strains (P and BAM). 16S rRNA sequences and chromosome mapping showed that these three strains are very closely related clonal variants in a single genomovar of P. stutzeri. Only strains Q and BAM were found to contain an integron and an associated gene cassette array. The intI and attI components of these strains showed 99 and 90% identity, respectively. The structure of these integrons and their associated gene cassettes was similar to that reported previously for other integron classes. The two integrons contained nonoverlapping sets of cassette-associated genes. In contrast, many of the cassette-associated recombination sites in the two integrons were similar and were considered to constitute a distinct subfamily consisting of 59-base element (59-be) recombination sites (the Pseudomonas subfamily). The recombination activity of P. stutzeri integron components was tested in cointegrate assays. IntIPstQ was shown to catalyze site-specific recombination between its cognate attI site and 59-be sites from antibiotic resistance gene cassettes. While IntIPstQ did not efficiently mediate recombination between members of the Pseudomonas 59-be subfamily and other 59-be types, the former sites were functional when they were tested with IntI1. We concluded that integrons present in P. stutzeri possess recombination activity and represent a hot spot for genomic diversity in this species.
dc.publisher Amer Soc Microbiology
dc.relation.isbasedon 10.1128/JB.185.3.918-928.2003
dc.title Recombination Activity of a Distinctive Integron-Gene Cassette System Associated with Pseudomonas stutzeri Populations in Soil
dc.type Journal Article
dc.parent Journal Of Bacteriology
dc.journal.volume 3
dc.journal.volume 185
dc.journal.number 3 en_US
dc.publocation Washington DC, USA en_US
dc.identifier.startpage 918 en_US
dc.identifier.endpage 928 en_US SCI.Institute for Biotechnology of Infectious Diseases en_US
dc.conference Verified OK en_US
dc.for 060503 Microbial Genetics
dc.personcode 104673
dc.personcode 105741
dc.percentage 100 en_US Microbial Genetics en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords NA
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history School of Medical and Molecular Sciences (ID: 341)
utslib.collection.history Closed (ID: 3)

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