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Journal of Bacteriology, December 2008, p. 8244-8247, Vol. 190, No. 24
0021-9193/08/$08.00+0     doi:10.1128/JB.01161-08
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Oxidant-Responsive Induction of the suf Operon, Encoding a Fe-S Assembly System, through Fur and IscR in Escherichia coli{triangledown}

Kyung-Chang Lee, Won-Sik Yeo, and Jung-Hye Roe*

Laboratory of Molecular Microbiology, School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 151-742, South Korea

Received 18 August 2008/ Accepted 29 September 2008

The suf operon encoding a Fe-S assembly system is induced by peroxides through activators OxyR and IscR in Escherichia coli. For apo-IscR to bind, oxidation-mediated dissociation of Fur is required. Therefore, a peroxide-responsive signal is transduced through OxyR, IscR, and Fur to achieve oxidation-sensitive and maximal induction of this operon.

* Corresponding author. Mailing address: School of Biological Sciences, Seoul National University, 56-1 Shillim-dong, Kwanak-gu, Seoul 151-742, South Korea. Phone: 82-2-880-6706. Fax: 82-2-888-4911. E-mail: jhroe{at}snu.ac.kr

{triangledown} Published ahead of print on 10 October 2008.

Journal of Bacteriology, December 2008, p. 8244-8247, Vol. 190, No. 24
0021-9193/08/$08.00+0     doi:10.1128/JB.01161-08
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



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