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Applied and Environmental Microbiology, February 2007, p. 1014-1018, Vol. 73, No. 3
0099-2240/07/$08.00+0     doi:10.1128/AEM.02429-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Chaperone Hsp31 Contributes to Acid Resistance in Stationary-Phase Escherichia coli{triangledown}

Mirna Mujacic1 and François Baneyx1,2*

Departments of Bioengineering,1 Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 981952

Received 16 October 2006/ Accepted 28 November 2006

Hsp31, the product of the {sigma}S- and {sigma}D-dependent hchA gene, is a heat-inducible chaperone implicated in the management of protein misfolding at high temperatures. We show here that Hsp31 plays an important role in the acid resistance of starved Escherichia coli but that it has little influence on oxidative-stress survival.

* Corresponding author. Mailing address: Department of Chemical Engineering, University of Washington, Box 351750, Seattle, WA 98195-1750. Phone: (206) 685-7659. Fax: (206) 685-3451. E-mail: baneyx{at}u.washington.edu.

{triangledown} Published ahead of print on 8 December 2006.

Applied and Environmental Microbiology, February 2007, p. 1014-1018, Vol. 73, No. 3
0099-2240/07/$08.00+0     doi:10.1128/AEM.02429-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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