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Journal of Bacteriology, April 2007, p. 3302-3305, Vol. 189, No. 8
0021-9193/07/$08.00+0     doi:10.1128/JB.01902-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

The SXT/R391 Family of Integrative Conjugative Elements Is Composed of Two Exclusion Groups{triangledown}

Joeli Marrero and Matthew K. Waldor*

Deparment of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts

Received 15 December 2006/ Accepted 6 February 2007

Conjugative elements often encode entry exclusion systems that convert host cells into poor recipients for identical or similar elements. The diversity of exclusion systems within families of conjugative elements has received little attention. We report here the most comprehensive study to date of the diversity of exclusion determinants within a single family of conjugative elements. Unexpectedly, our analyses indicate that there are only two exclusion groups among the diverse members of the SXT/R391 family of integrative conjugative elements.

* Corresponding author. Mailing address: Channing Lab, Harvard Medical School, 181 Longwood Ave, Boston MA, 02115. Phone: (617) 525-4646. Fax: (617) 525-4660. E-mail: mwaldor{at}rics.bwh.harvard.edu

{triangledown} Published ahead of print on 16 February 2007.

Journal of Bacteriology, April 2007, p. 3302-3305, Vol. 189, No. 8
0021-9193/07/$08.00+0     doi:10.1128/JB.01902-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Marrero, J., Waldor, M. K. (2007). Determinants of Entry Exclusion within Eex and TraG Are Cytoplasmic. J. Bacteriol. 189: 6469-6473 [Abstract] [Full Text]  


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