Journal of Bacteriology, February 2006, p. 1615-1619, Vol. 188, No. 4
0021-9193/06/$08.00+0 doi:10.1128/JB.188.4.1615-1619.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.
NnrA Is Required for Full Virulence and Regulates Several Brucella melitensis Denitrification Genes
Valérie Haine,1,
Marie Dozot,1
Jacques Dornand,2
Jean-Jacques Letesson,1 and
Xavier De Bolle1*
Unité de Recherche en Biologie Moléculaire (URBM), University of Namur, Belgium,1
INSERM U431, University of Montpellier II, France2
Received 11 August 2005/
Accepted 14 November 2005
We identified two regulators of denitrification genes in Brucella melitensis 16M: NarR, which regulates the nitrate reductase (nar) operon, and NnrA, which is involved in the expression of the last three reductases of the denitrification pathway (nirK, norB, and nosZ). NnrA is required for virulence in mice and for intracellular resistance to nitric oxide.
* Corresponding author. Mailing address: Unité de Recherche en Biologie Moléculaire (URBM), University of Namur (FUNDP), 61 rue de Bruxelles, B-5000 Namur, Belgium. Phone: 32 81 72 44 38. Fax: 32 81 72 42 97. E-mail: xavier.debolle{at}fundp.ac.be.
Present address: Center for Neurovirology and Cancer Biology, Temple University, Philadelphia, PA 19122.
Journal of Bacteriology, February 2006, p. 1615-1619, Vol. 188, No. 4
0021-9193/06/$08.00+0 doi:10.1128/JB.188.4.1615-1619.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.
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Copyright © 2006 by the American Society for Microbiology. All rights reserved.