PMID:1744047
| Citation |
Hengge-Aronis, R, Klein, W, Lange, R, Rimmele, M and Boos, W (1991) Trehalose synthesis genes are controlled by the putative sigma factor encoded by rpoS and are involved in stationary-phase thermotolerance in Escherichia coli. J. Bacteriol. 173:7918-24 |
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| Abstract |
The rpoS (katF) gene of Escherichia coli encodes a putative sigma factor (sigma S) required for the expression of a variety of stationary phase-induced genes, for the development of stationary-phase stress resistance, and for long-term starvation survival (R. Lange and R. Hengge-Aronis, Mol. Microbiol. 5:49-59, 1991). Here we show that the genes otsA, otsB, treA, and osmB, previously known to be osmotically regulated, are also induced during transition into stationary phase in a sigma S-dependent manner. otsA and otsB, which encode trehalose-6-phosphate synthase and trehalose-6-phosphate phosphatase, respectively, are involved in sigma S-dependent stationary-phase thermotolerance. Neither sigma S nor trehalose, however, is required for the development of adaptive thermotolerance in growing cells, which might be controlled by sigma E. |
| Links | |
| Keywords |
Adaptation, Physiological/genetics; Bacterial Proteins/genetics; Bacterial Proteins/metabolism; Escherichia coli/genetics; Escherichia coli/growth & development; Gene Expression Regulation, Bacterial; Genes, Bacterial; Kinetics; Osmotic Pressure; Sigma Factor/genetics; Sigma Factor/metabolism; Temperature; Trehalose/biosynthesis; Trehalose/genetics |
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