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Antimicrobial Agents and Chemotherapy, August 2002, p. 2656-2661, Vol. 46, No. 8
0066-4804/02/$04.00+0     DOI: 10.1128/AAC.46.8.2656-2661.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Novel Complex sul1-Type Integron in Escherichia coli Carrying blaCTX-M-9

Montserrat Sabaté,1 Ferran Navarro,1* Elisenda Miró,1 Susana Campoy,2 Beatriz Mirelis,1 Jordi Barbé,2,3 and Guillem Prats1

Departament de Microbiologia, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma, 08025 Barcelona,1 Departament de Genètica i Microbiologia, Universitat Autònoma de Barcelona,2 Centre de Recerca en Sanitat Animal (CreSA), 08193 Bellaterra, Spain3

Received 12 November 2001/ Returned for modification 9 March 2002/ Accepted 13 May 2002

For the present report, a novel complex class 1 integron, In60, was characterized. Part of this integron includes the blaCTX-M-9 gene and its downstream nucleotide sequence, which shares 81% and 78% nucleotide identity with those of kluA-1 ß-lactamase and orf3 of K. ascorbata, respectively. Furthermore, a new insertion sequence, IS3000, has been found in In60. PCR analysis indicates that integron In60 is present in 33 of 34 nonclonal enterobacterial isolates carrying the putative ß-lactamase CTX-M-9.


* Corresponding author. Mailing address: Departament de Microbiologia, Hospital de la Santa Creu i Sant Pau, Av. Sant Antoni M Claret, 167, 08025 Barcelona, Spain. Phone: 34 93 2919071. Fax: 34 93 2919070. E-mail: fnavarror{at}hsp.santpau.es.


Antimicrobial Agents and Chemotherapy, August 2002, p. 2656-2661, Vol. 46, No. 8
0066-4804/02/$04.00+0     DOI: 10.1128/AAC.46.8.2656-2661.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.




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