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JB Accepts, published online ahead of print on 25 May 2007
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J. Bacteriol. doi:10.1128/JB.00453-07
Copyright (c) 2007, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

Thermoregulation of Escherichia coli hchA transcript stability

Aviram Rasouly, Yotam Shenhar, and Eliora Z. Ron*

Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel, 69978

* To whom correspondence should be addressed. Email: eliora{at}post.tau.ac.il.


  Abstract

The conserved chaperone Hsp31 of Escherichia coli is transcribed at low temperatures by {sigma}S and repressed by H-NS, whereas at high temperature transcription is by {sigma}70 independently of both {sigma}S and H-NS. Here we present evidence for an additional, novel, temperature-dependent control of Hsp31 expression by increased transcript stability.




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