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  1. ...phylogenetically distant organisms. We hypothesized a regulatory role of G4 DNA during supercoiling stress, when duplex destabilization may result in G4 formation. This is in line with our observations from target site analysis for 55 DNA-binding proteins in Escherichia coli, which reveals significant ( P < 0...
  2. ...to the proposal that chromosomal superhelicity may be a global regulator of gene expression in Escherichia coli ( Hatfield and Benham 2002 ). Strand separation in most DNA regulatory events is not mediated by superhelical stresses alone, but instead usually involves interactions between the DNA and other...
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