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Journal of Bacteriology, December 1999, p. 7639-7642, Vol. 181, No. 24
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Evidence that Expression of the Vibrio vulnificus Hemolysin Gene Is Dependent on Cyclic AMP and Cyclic AMP Receptor Protein

Young Bae Bang,1 Shee Eun Lee,2 Joon Haeng Rhee,2,3 and Sang Ho Choi1,3,*

Department of Food Science and Technology, Institute of Biotechnology, Chonnam National University, Kwang-Ju, 500-757,1 and Department of Microbiology,2 Institute of Medical Sciences,3 Chonnam National University Medical School, Kwang-Ju, 500-190, South Korea

Received 22 July 1999/Accepted 27 September 1999

Glucose repressed hemolysin production in Vibrio vulnificus. Promoter activity of the hemolysin gene, vvh, assessed with a vvh-luxCDABE transcriptional fusion, required cyclic AMP (cAMP) and cAMP receptor protein (CRP) in Escherichia coli. Hemolysin production in V. vulnificus increased after the addition of cAMP and was undetectable in a putative crp mutant, suggesting that vvh is also regulated by cAMP-CRP in V. vulnificus.

* Corresponding author. Mailing address: Department of Food Science and Technology, Institute of Biotechnology, Chonnam National University, Kwang-Ju, 500-757, South Korea. Phone: 82-62-530-2146. Fax: 82-62-530-2149. E-mail: shchoi{at}chonnam.chonnam.ac.kr.

Journal of Bacteriology, December 1999, p. 7639-7642, Vol. 181, No. 24
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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