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The replication, partition and yop regulation of the pYV plasmids are highly conserved in Yersinia enterocolitica and Y. pseudotuberculosis

Biot, T. and Cornelis, G. R.. (1988) The replication, partition and yop regulation of the pYV plasmids are highly conserved in Yersinia enterocolitica and Y. pseudotuberculosis. Journal of General Microbiology, Vol. 134, H. 6. S. 1525-1534.

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Official URL: http://edoc.unibas.ch/dok/A5259262

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Abstract

The replication genes (rep) of the virulence plasmid pYVe439-80 of Yersinia enterocolitica were localized and characterized by restriction endonuclease analysis. Comparison with pIB1, a virulence plasmid of Y. pseudotuberculosis, indicates that while the plasmids carry homologous rep genes their location with respect to the highly conserved 'calcium region' is different. This replication function is thermosensitive. Mini-derivatives of pYVe439-80 appear to be rather unstable. The region of pYVe439-80 containing homology to the incD determinant of F was shown to contain a plasmid-stabilization system (par). The region encoding par was characterized by restriction endonuclease analysis. pIB1 contained an homologous par region but located differently. The pYV plasmids thus underwent rearrangements during their divergent evolution. While the positions of rep and par in the two plasmids are inverted with respect to the surrounding loci, our determination of the orientation of each locus rules out the hypothesis of a simple inversion of a quadrant of pYV. The gene encoding YOP5, a 26 kDa protein encoded by pIB1, was cloned on a mobilizable vector and introduced in Y. enterocolitica W22708 containing pYVe227 (indistinguishable from pYVe439-80), mutated in the homologous gene. The recombinant Y. enterocolitica secreted YOP5. Hence, the transcriptional activation and secretion systems of pYVe227 act on a yop gene from pIB1 and on its product, indicating that these systems are interchangeable.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Molecular Microbiology (Cornelis)
UniBasel Contributors:Cornelis, Guy R.
Item Type:Article, refereed
Bibsysno:Link to catalogue
Publisher:Cambridge University Press
ISSN:0022-1287
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:22 Mar 2012 14:20
Deposited On:22 Mar 2012 13:22

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