This title appears in the Scientific Report :
2010
E. coli 6S RNA: A universal transcriptional regulator within the centre of growth adaption
E. coli 6S RNA: A universal transcriptional regulator within the centre of growth adaption
Bacterial 6S RNA has been shown to bind with high affinity to s70containing RNA polymerase, suppressing s70- dependent transcription during stationary phase, when 6S RNA concentrations are highest. We recently reported a genome- wide transcriptional comparison of wild- type and 6S RNA deficient E. c...
Saved in:
Personal Name(s): | Geißen, R. |
---|---|
Steuten, B. / Polen, T. / Wagner, R. | |
Contributing Institute: |
Biotechnologie 1; IBT-1 |
Published in: | RNA biology, 7 (2010) S. 564 - 568 |
Imprint: |
Georgetown, Tex.
Landes Bioscience
2010
|
Physical Description: |
564 - 568 |
Document Type: |
Journal Article |
Research Program: |
Biotechnologie |
Series Title: |
RNA Biology
7 |
Subject (ZB): | |
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520 | |a Bacterial 6S RNA has been shown to bind with high affinity to s70containing RNA polymerase, suppressing s70- dependent transcription during stationary phase, when 6S RNA concentrations are highest. We recently reported a genome- wide transcriptional comparison of wild- type and 6S RNA deficient E. coli strains. Contrary to the expected s70- and stationary phase-specific regulatory effect of 6S RNA it turned out that mRNA levels derived from many alternative sigma factors, including s38 or s32, were affected during exponential and stationary growth. Among the most noticeably downregulated genes at stationary growth are ribosomal proteins and factors involved in translation. In addition, a striking number of mRNA levels coding for enzymes involved in the purine metabolism, for transporters and stress regulators are altered both during log- and stationary phase. During the study we discovered a link between 6S RNA and the general stress alarmone ppGpp, which has a higher basal level in cells deficient in 6S RNA. This finding points to a functional interrelation of 6S RNA and the global network of stress and growth adaptation. | ||
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