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Journal of Bacteriology, August 1998, p. 3997-4001, Vol. 180, No. 15
0021-9193/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Cloning, Characterization, and Transcriptional Analysis of a Gene Encoding an alpha -Crystallin-Related, Small Heat Shock Protein from the Thermophilic Cyanobacterium Synechococcus vulcanus

Sanjit Kumer Roy and Hitoshi Nakamoto*

Department of Biochemistry and Molecular Biology, Saitama University, Urawa 338, Japan

Received 13 January 1998/Accepted 29 April 1998

hspA, a gene encoding a 16-kDa heat-induced protein from the thermophilic cyanobacterium Synechococcus vulcanus, has been cloned and sequenced. The deduced amino acid sequence of the gene product showed significant homology to sequences of the family of alpha -crystallin-related, small heat shock proteins. A monocistronic mRNA of hspA increased transiently in response to heat shock. The heat shock induction occurred at a vegetative promoter but without the CIRCE (controlling inverted repeat of chaperone expression) element.

* Corresponding author. Mailing address: Department of Biochemistry and Molecular Biology, Saitama University, Urawa 338, Japan. Phone: 81-48-858-3403. Fax: 81-48-858-3384. E-mail: nakamoto{at}sacs.sv.saitama-u.ac.jp.

Journal of Bacteriology, August 1998, p. 3997-4001, Vol. 180, No. 15
0021-9193/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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