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DNA topology and gene expression inClostridium acetobutylicum: Implications for the regulation of solventogenesis

✍ Scribed by S. Ullmann; A. Kuhn; P. Dürre

Publisher
Springer Netherlands
Year
1996
Tongue
English
Weight
454 KB
Volume
18
Category
Article
ISSN
0141-5492

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✦ Synopsis

The relationship between solventogenesis, heat shock, and DNA topology in Clostridium acetobutylicum was investigated by inhibiting DNA gyrase in vivo by high concentrations of novobiocin. Primer extension and Northern blot analyses revealed that expression of genes required for solventogenesis and heat shock response was induced in the presence of this drug, whereas the transcription rate of acidogenic genes decreased, suggesting a role for DNA supercoiling as a signal for onset of solventogenesis.

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