Skip to main content

Interaction of the Nucleoid-Associated Proteins HAA and H-NS to Modulated Expression of the Hemolysin Operon in Escherichia coli

  • Chapter
Genes and Proteins Underlying Microbial Urinary Tract Virulence

Conclusion

Both the in vitro and in vivo data reported here strongly support the hypothesis that Hha and H-NS interact with DNA to generate a nucleoprotein complex that influences gene expression. The Hha-H-NS complex seems to be mainly responsible for the thermoosmotic modulation of the expression of the hly operon of plasmid pHly152. Binding sites for Hha and H-NS along the regulatory region of the hly operon, as well as the topological changes mediated by the interaction of both proteins with DNA, are currently being investigated.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 129.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Similar content being viewed by others

References

  1. Mikulskis, A.V. and Cornelis, G.R., 1994, A new class of proteins regulating gene expression in enterobacteria. Mol. Microbiol. 11: 77–86.

    PubMed  CAS  Google Scholar 

  2. Cornelis, G.R., Sluiters, C., Delor, I., Gelb, D., Kaninga, K., Lambert de Rouvroit, C., Sory, M.P., Vanooteghem, J.C. and Michaelis, T., 1991, ymoA, a Yersinia enterocolitica chromosomal gene modulating the expression of virulence functions. Mol.Microbiol. 5: 1023–1034.

    PubMed  CAS  Google Scholar 

  3. Nieto, J.M., Carmona, M., Bolland, S., Jubete, Y., De la Cruz, F. and Juárez, A., 1991, The hha gene modulates hemolysin expression in Escherichia coli. Mol. Microbiol. 5: 1285–1293.

    PubMed  CAS  Google Scholar 

  4. Carmona, M., Balsalobre, C., Muñoa, F.J., Mouriño, M., Jubete, Y., De la Cruz, F. and Juárez, A., 1993, Escherichia coli hha mutants, DNA supercoiling and expression of the haemolysin genes from the recombinant plasmid pANN202-312. Mol. Microbiol. 9: 1011–1018.

    PubMed  CAS  Google Scholar 

  5. Mouriño, M., Madrid, C., Balsalobre, C., Prenafeta, A., Muñoa, F.J., Blanco, J., Blanco, M., Blanco, J.E., and Juárez, A., 1996, The Hha protein as a modulator of the expression of virulence factors in Escherichia coli. Inf. Immun. 64: 2881–2884.

    Google Scholar 

  6. Mouriño, M., Muñoa, F.J., Balsalobre, C., Dåaz, P., Madrid, C. and Juárez, A., 1994, Environmental regulation of alpha-hemolysin expression in Escherichia coli. Microb. Pathog. 16: 249–259.

    PubMed  Google Scholar 

  7. Balsalobre, C., Juárez, A., Madrid, C., Mouriño, M., Prenafeta, A. and Muñoa, F, 1996, Complementation of the hha mutation in Escherichia coli by the ymoA gene from Yersinia enterocolitica: dependence on the gene dosage. Microbiology 142: 1841–1846.

    Article  PubMed  CAS  Google Scholar 

  8. Atlung, T. and Ingmer, A., 1997, H-NS: a modulator of environmentally regulated gene expression. Mol. Microbiol. 24: 7–17.

    Article  PubMed  CAS  Google Scholar 

  9. Williams, R.M. and Rimsky, S., 1997, Molecular aspects of the E. coli nucleoid protein H-NS: a central controller of gene regulatory networks. FEMS Microbiol. Lett. 156: 175–185.

    Article  PubMed  CAS  Google Scholar 

  10. Nieto, J.M., Mouriño, M., Balsalobre, C., Madrid, C., Prenafeta, A., Muñoa, F.J. and Juárez, A., 1997, Construction ofa double hha hns mutant of Escherichia coli: effect on DNA supercoiling and α-hemolysin production. FEMS Microbiol. Lett. 155: 39–44.

    Article  PubMed  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2002 Kluwer Academic Publishers

About this chapter

Cite this chapter

Juárez, A. et al. (2002). Interaction of the Nucleoid-Associated Proteins HAA and H-NS to Modulated Expression of the Hemolysin Operon in Escherichia coli . 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_17

Download citation

  • DOI: https://doi.org/10.1007/0-306-46840-9_17

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-0-306-46455-3

  • Online ISBN: 978-0-306-46840-7

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics