期刊
FEMS MICROBIOLOGY LETTERS
卷 287, 期 1, 页码 56-62出版社
BLACKWELL PUBLISHING
DOI: 10.1111/j.1574-6968.2008.01291.x
关键词
CE-SSCP; class 1 integron; intI1; environmental DNA; gene diversity; bioprospecting
类别
资金
- ARC [DP0450056]
- DEST
- Australian Research Council [DP0450056] Funding Source: Australian Research Council
Class 1 integrons are an important vector for the spread of antibiotic resistance. The core of this genetic clement is highly conserved in all class 1 integrons recovered from clinical contexts. Recently, bacteria containing more divergent class 1 integrons have been isolated from environmental samples, suggesting undiscovered diversity in these elements. We performed it culture-independent survey of the class 1 integron-integrase gene (intI1) from environmental DNA, assessing sequence variation using capillary electrophoresis single-strand conformation polymorphism. This analysis allowed informed selection of environments for further investigation based oil the diversity of intI1 targets that were present. IntI1 was common in environmental samples and exhibited previously unsuspected sequence diversity. The method allowed discrimination between clinical and environmental variants of intI1.
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