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Antimicrobial Agents and Chemotherapy, January 2005, p. 447-450, Vol. 49, No. 1
0066-4804/05/$08.00+0     doi:10.1128/AAC.49.1.447-450.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

ISEcp1B-Mediated Transposition of blaCTX-M in Escherichia coli

Laurent Poirel, Marie-Frédérique Lartigue, Jean-Winoc Decousser, and Patrice Nordmann*

Service de Bactériologie-Virologie, Hôpital de Bicêtre, Assistance Publique/Hôpitaux de Paris, Faculté de Médecine Paris-Sud, Le Kremlin Bicêtre, France

Received 14 November 2003/ Returned for modification 1 February 2004/ Accepted 11 September 2004

Several expanded-spectrum ß-lactamase blaCTX-M genes are associated with ISEcp1-like elements in Enterobacteriaceae. We found that ISEcp1B was able to mobilize the adjacent blaCTX-M-19 gene by a transpositional mechanism in Escherichia coli by recognizing a variety of DNA sequences as right inverted repeats.


* Corresponding author. Mailing address: Service de Bactériologie-Virologie, Hôpital de Bicêtre, 78 rue du Général Leclerc, 94275 Le Kremlin-Bicêtre Cedex, France. Phone: 33-1-45-21-36-32. Fax: 33-1-45-21-63-40. E-mail: nordmann.patrice{at}bct.ap-hop-paris.fr.


Antimicrobial Agents and Chemotherapy, January 2005, p. 447-450, Vol. 49, No. 1
0066-4804/05/$08.00+0     doi:10.1128/AAC.49.1.447-450.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.




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