Identification of a putative pathogenicity island in Shigella flexneri using subtractive hybridisation of the S. flexneri and Escherichia coli genomes

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Abstract

The genetic differences between the human pathogen, Shigella flexneri, and the non-pathogenic Escherichia coli were investigated in an attempt to identify pathogenicity islands (PAIs) in the S. flexneri genome. Genomic subtraction identified a large unique region of DNA which was present in S. flexneri serotype 2a but absent from E. coli K-12. This 42-kb DNA segment was localised to the S. flexneri chromosome and was found to contain a number of elements often associated with PAIs including: insertion sequence elements, bacteriophage genes, and a previously identified Shigella virulence gene (criR). These findings indicate that this region may form a new PAI in the S. flexneri genome. © 2002 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

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Walker, J. C., & Verma, N. K. (2002). Identification of a putative pathogenicity island in Shigella flexneri using subtractive hybridisation of the S. flexneri and Escherichia coli genomes. FEMS Microbiology Letters, 213(2), 257–264. https://doi.org/10.1016/S0378-1097(02)00836-4

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