Conclusion
The in vitro hemolytic activity directed by the two hly operons of strain 536 differ significantly,which is probably the effect of the different transcriptional rate.
While the coding regions of the two hly determinants are 96% homologous,no similarity can be found in the 5’ flanking regions (except the 8 bp ops motif).The dissimilar upstream elements may explain the different expression of the operons.
Loss of the pathogenicity islands carrying the hemolysin determinants results in an avirulent phenotype.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Hacker, J., Blum-Oehler, G., Möhldorfer, I., and Tschôpe, H., 1997, Pathogenicity islands of virulent bacteria: structure, function and impact on microbial evolution. Mol. Microbiol. 23: 1089–97.
Vogel, M., Hess, J., Then, I., Juarez, A., and Goebel, W., 1988, Characterization of a sequence (hlyR) which enhances synthesis and secretion of hemolysin in Escherichia coli. Mol. Gen. Genet. 212: 76–84
Koronakis, V., Cross, M., and Hughes, C., 1989, Transcription antitermination in an Escherichia coli hemolysin operon is directed progressively by cis-acting DNA sequences upstream of the promoter region. Mol. Microbiol. 3: 1397–1404.
Bailey, M.J., Hughes, C., Koronakis, V., 1997, RfaH and the ops element, components of a novel system controlling bacterial transcription elongation. Mol. Microbiol., 26: 845–851
Hess, J., Wels, W., Vogel, M., Goebel, W., 1986, Nucleotide sequence of a plasmidencoded hemolysin determinant and its comparison with corresponding chromosomal hemolysin sequence. FEMS Microbiology Letters 34: 1–11
Hacker, J., Blum-Oehler, G., Janke, B., Nagy, G., and Goebel, W., 1999, Pathogenicity islands of extraintestinal Escherichia coli. In Pathogenicity Islands and Other Mobile Virulence Elements (J.B. Kaper and J. Hacker, eds.), American Society for Microbiology., Washington D.C., pp. 59–76.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Kluwer Academic Publishers
About this chapter
Cite this chapter
Nagy, G., Dobrindt, U., Blum-Oehler, G., Emoődy, L., Goebel, W., Hacker, J. (2002). Analysis of the Hemolysin Determinants of the Uropathogenic Escherichia coli Strain 536. In: Emoődy, L., Pál, T., Hacker, J., Blum-Oehler, G. (eds) Genes and Proteins Underlying Microbial Urinary Tract Virulence. Advances in Experimental Medicine and Biology, vol 485. Springer, Boston, MA. https://doi.org/10.1007/0-306-46840-9_7
Download citation
DOI: https://doi.org/10.1007/0-306-46840-9_7
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-306-46455-3
Online ISBN: 978-0-306-46840-7
eBook Packages: Springer Book Archive