Expression of cspH, encoding the cold shock protein in Salmonella enterica serovar Typhimurium UK-1.

Abstract:

:Both Salmonella enterica serovar Typhimurium and Escherichia coli contain the cspH gene encoding CspH, one of the cold shock proteins (CSPs). In this study, we investigated the expression of cspH in S. enterica serovar Typhimurium and found that it was induced in response to a temperature downshift during exponential phase. The cspH promoter was activated at 37 degrees C, and its mRNA was more stable than the other csp mRNAs at 37 degrees C. Moreover, lacZ expression of the translational cspH-lacZ fusion was induced at that temperature. Interestingly, the cspH mRNA had a much shorter 5'-untranslated region than those in the other cold-shock-inducible genes, and the promoter sequence, which was only 55 bp, was sufficient for cspH expression. The 14-base downstream box located 12 bases downstream of the initiation codon of cspH mRNA was essential for its cold shock activation.

journal_name

J Bacteriol

journal_title

Journal of bacteriology

authors

Kim BH,Bang IS,Lee SY,Hong SK,Bang SH,Lee IS,Park YK

doi

10.1128/JB.183.19.5580-5588.2001

keywords:

subject

Has Abstract

pub_date

2001-10-01 00:00:00

pages

5580-8

issue

19

eissn

0021-9193

issn

1098-5530

journal_volume

183

pub_type

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