Send to

Choose Destination
Mol Microbiol. 1999 Jan;31(1):291-303.

Independent acquisition and insertion into different chromosomal locations of the same pathogenicity island in Yersinia pestis and Yersinia pseudotuberculosis.

Author information

Department of Biomedical Sciences, University at Albany, NY, USA.


We show that Yersinia pestis and pesticin-sensitive isolates of Y. pseudotuberculosis possess a common 34 kbp DNA region that has all the hallmarks of a pathogenicity island and is inserted into different asparaginyl tRNA genes at different chromosomal locations in each species. This pathogenicity island (YP-HPI) is marked by IS100, has a G + C content different from its host, is flanked by 24 bp direct repeats, encodes a putative, P4-like integrase and contains the iron uptake virulence genes from the pgm locus of Y. pestis. These findings indicate independent horizontal acquisition of this island by Y. pestis and Y. pseudotuberculosis. The two YP-HPI locations and their possession of an integrase gene support a model of site-specific integration of the YP-HPI into these bacteria.

[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center