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Journal of Bacteriology, January 1999, p. 689-694, Vol. 181, No. 2
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Cyclic AMP Receptor Protein and TyrR Are Required for Acid pH and Anaerobic Induction of hyaB and aniC in Salmonella typhimurium

Kyeong R. Park,1 Jean-Christophe Giard,2,dagger Juno H. Eom,3 Shawn Bearson,2,Dagger and John W. Foster2,*

Department of Microbiology and Immunology, University of South Alabama, College of Medicine, Mobile, Alabama 38866,2 and Department of Microbiology, Han Nam University, Taejon1 and Department of Biology, Korea University, Seoul,3 Korea

Received 10 September 1998/Accepted 3 November 1998

Two acid-inducible genes, aniC and aciK, that require anaerobiosis and tyrosine for expression were identified as orf326a encoding a potential amino acid/polyamine antiporter and hyaB encoding hydrogenase I, respectively. Cyclic AMP (cAMP) receptor protein, cAMP, and TyrR, regulator of aromatic amino acid metabolism, were strong positive regulators of both genes.

* Corresponding author. Mailing address: Department of Microbiology and Immunology, University of South Alabama, College of Medicine, Mobile, AL 38866. Phone: (334) 460-6323. Fax: (334) 460-7931. E-mail: fosterj{at}sungcg.usouthal.edu.

dagger Present address: Laboratoire de Microbiologie de l'Environnement, IRBA, Université de Caen, 14032 Caen Cedex, France.

Dagger Present address: Department of Microbiology and Molecular Genetics, University of California---Los Angeles, Los Angeles, CA 90095.

Journal of Bacteriology, January 1999, p. 689-694, Vol. 181, No. 2
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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