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. 1987 Jan 26;15(2):785–796. doi: 10.1093/nar/15.2.785

Sequence distributions associated with DNA curvature are found upstream of strong E. coli promoters.

R R Plaskon, R M Wartell
PMCID: PMC340467  PMID: 3547329

Abstract

The regions upstream from forty-three procaryotic promoters were examined for nucleotide distributions which have been associated with DNA curvature. The analysis procedure assigned a DNA curvature score based on the phasing of the 5' and 3' ends of An and Tn tracts, n greater than or equal to 3. The weighting scheme for the curvature score was based on recent studies which showed that tracts of An and Tn periodically phased with the helix repeat cause DNA curvature. Results show that promoters which have high transcription initiation rates in vivo tend to have high curvature scores in their upstream regions. Regions downstream from the transcription start-point do not have sequences correlated with DNA curvature. Four promoters which have been shown to have upstream activation regions have curvature scores above 1.5 in their -40 to -150 regions. The correlations observed lend support to the hypothesis that DNA curvature is associated with upstream activation of transcription.

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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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