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POPULATION GENETICS AND EVOLUTION

Genetic Diversity of the Gene Cluster Encoding Longus, a Type IV Pilus of Enterotoxigenic Escherichia coli

Oscar G. Gomez-Duarte, Sujay Chattopadhyay, Scott J. Weissman, Jorge A. Giron, James B. Kaper, Evgeni V. Sokurenko
Oscar G. Gomez-Duarte
1Division of Infectious Diseases, Department of Pediatrics, University of Iowa Children's Hospital, Iowa City, Iowa
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  • For correspondence: oscar-gomez@uiowa.edu evs@u.washington.edu
Sujay Chattopadhyay
2Department of Microbiology, University of Washington, Seattle, Washington
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Scott J. Weissman
3Division of Infectious Disease, Immunology, and Rheumatology, Department of Pediatrics, University of Washington, Seattle, Washington
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Jorge A. Giron
4Department of Immunobiology, University of Arizona, Tucson, Arizona
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James B. Kaper
5Department of Microbiology, University of Maryland, Baltimore, Maryland
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Evgeni V. Sokurenko
2Department of Microbiology, University of Washington, Seattle, Washington
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  • For correspondence: oscar-gomez@uiowa.edu evs@u.washington.edu
DOI: 10.1128/JB.00722-07
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ABSTRACT

Enterotoxigenic Escherichia coli (ETEC) strains produce a type IV pilus named Longus. We identified a 16-gene cluster involved in the biosynthesis of Longus that has 57 to 95% identity at the protein level to CFA/III, another type IV pilus of ETEC. Alleles of the Longus structural subunit gene lngA demonstrate a diversity of 12 to 19% at the protein level with strong positive selection for point replacements and horizontal transfer.

  • Copyright © 2007 American Society for Microbiology
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Genetic Diversity of the Gene Cluster Encoding Longus, a Type IV Pilus of Enterotoxigenic Escherichia coli
Oscar G. Gomez-Duarte, Sujay Chattopadhyay, Scott J. Weissman, Jorge A. Giron, James B. Kaper, Evgeni V. Sokurenko
Journal of Bacteriology Nov 2007, 189 (24) 9145-9149; DOI: 10.1128/JB.00722-07

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Genetic Diversity of the Gene Cluster Encoding Longus, a Type IV Pilus of Enterotoxigenic Escherichia coli
Oscar G. Gomez-Duarte, Sujay Chattopadhyay, Scott J. Weissman, Jorge A. Giron, James B. Kaper, Evgeni V. Sokurenko
Journal of Bacteriology Nov 2007, 189 (24) 9145-9149; DOI: 10.1128/JB.00722-07
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KEYWORDS

Enterotoxigenic Escherichia coli
Fimbriae, Bacterial
Genetic Variation
Multigene Family

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