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Plasmid. 2006 May;55(3):173-83. Epub 2006 Mar 13.

The current ICE age: biology and evolution of SXT-related integrating conjugative elements.

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1
Department of Molecular Biology and Microbiology, Tufts University School of Medicine, and Howard Hughes Medical Institute Boston, MA 02111, USA.

Abstract

SXT is an integrating conjugative element (ICE) that was initially isolated from a 1992 Vibrio cholerae O139 clinical isolate from India. This approximately 100-kb ICE encodes resistance to multiple antibiotics. SXT or closely related ICEs are now present in most clinical and some environmental V. cholerae isolates from Asia and Africa. SXT-related ICEs are not limited to V. cholerae. It is now clear that so-called IncJ elements such as R391 are closely related to SXT. More than 25 members of the SXT/R391 family of ICEs have now been identified in environmental and clinical isolates of diverse species of gamma-proteobacteria worldwide. In this review, we discuss the diversity, evolution and biology of this family of ICEs.

PMID:
16530834
DOI:
10.1016/j.plasmid.2006.01.001
[Indexed for MEDLINE]
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