English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This paper describes a computational method to predict the sites on a DNA molecule where imposed superhelical stresses destabilize the duplex. Several DNA sequences are analyzed in this way, including the pBR322 and ColE1 plasmids, bacteriophage f1, and the polyoma and bovine papilloma virus genomes. Superhelical destabilization in these molecules is predicted to occur at small numbers of discrete sites, most of which are within regulatory regions. The most destabilized sites include the terminator and promoter regions of specific plasmid operons, the LexA binding sites of genes under SOS control, the intergenic control region of bacteriophage f1, and the polyadenylylation sites in eukaryotic viruses. These results demonstrate the existence of close correspondences between sites of predicted superhelical duplex destabilization and specific types of regulatory regions. The use of these correspondences to supplement string-matching techniques in the search for regulatory loci is discussed.

Sites of predicted stress-induced DNA duplex destabilization occur preferentially at regulatory loci.