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Updated: Jul 16, 2026

Site-specific Bacterial Chromosome Engineering: ΦC31 Integrase Mediated Cassette Exchange (IMCE)
Published on: March 16, 2012
Acquisition and diffusion of bla CTX-M-9 gene by R478-IncHI2 derivative plasmids
Aurora García1, Ferran Navarro, Elisenda Miró
1Servei de Microbiologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
Abstract:
Escherichia coli and Salmonella enterica isolates carrying the bla(CTX-M-9) gene located on plasmids prevailed at the Hospital de la Santa Creu i Sant Pau, Barcelona, Spain in the 1996-1999 period. The bla(CTX-M-9)-carrying plasmids showed a great variability in size, suggesting the mobilization of the gene among different plasmid scaffolds. The aim of the present work was to identify and better characterize the plasmids involved in the spread of the bla(CTX-M-9) gene. Results showed that the majority of these strains carried plasmids belonging to the IncHI2 incompatibility group. The IncHI2 plasmids were further characterized, and found to be related to the reference IncHI2 plasmid R478.
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