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. 1988 May 25;16(10):4595–4605. doi: 10.1093/nar/16.10.4595

Integration host factor of Escherichia coli regulates early- and repressor transcription of bacteriophage Mu by two different mechanisms.

P A van Rijn 1, N Goosen 1, P van de Putte 1
PMCID: PMC336651  PMID: 3288971

Abstract

Integration host factor (IHF) of E. coli positively regulates both early and repressor transcription of bacteriophage Mu. In this paper we show that although binding of IHF to the same binding site is responsible for both types of transcription regulation, the mechanisms by which these regulations occur are different: Activation of transcription from the early promoter (Pe) requires a helix-dependent orientation of IHF- and RNA polymerase binding sites on the DNA helix with a limited distance between both sites. Activation of repressor transcription shows no helix dependency between promoter and IHF binding site and the distance between both sites can be enlarged at least by 100 base pairs without affecting the positive control. A possible mechanism for both types of transcription stimulation will be discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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