PMID:2002001
| Citation |
Jenkins, DE, Auger, EA and Matin, A (1991) Role of RpoH, a heat shock regulator protein, in Escherichia coli carbon starvation protein synthesis and survival. J. Bacteriol. 173:1992-6 |
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| Abstract |
Escherichia coli starvation proteins include several heat shock proteins whose induction by heat is controlled by the minor sigma factor, sigma 32. The level of sigma 32 increased in wild-type E. coli upon starvation, and three sigma 32-controlled heat shock proteins (DnaK, GroEL, and HtpG) were not induced during starvation in an isogenic delta rpoH strain, which is unable to synthesize sigma 32. Thus, sigma 32 plays a role in the induction of these proteins during both heat shock and starvation. The delta rpoH strain was more sensitive to starvation but could develop starvation-mediated cross protection against heat and oxidation. |
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| Keywords |
Bacterial Proteins/biosynthesis; Bacterial Proteins/genetics; Carbon/metabolism; Chromosome Deletion; Electrophoresis, Gel, Two-Dimensional; Escherichia coli/genetics; Escherichia coli/metabolism; Gene Expression Regulation, Bacterial; Glucose/metabolism; Heat-Shock Proteins/genetics; Heat-Shock Proteins/metabolism; Hot Temperature; Sigma Factor/physiology; Starvation |
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