Results 171 to 180 of about 11,463 (183)

Superhelical model of DNA for regulation of gene expression

Journal of Theoretical Biology, 1983
A superhelical higher-order structure is proposed as a model of template DNA for regulation of transcription in simian virus 40. A stem-and-loop structure is located 3' downstream from the transcriptional initiation site in the sense strand. The complementary sequences to the loop regions in both strands are found between the 70th and the 300th ...
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Energetics of the strand separation transition in superhelical DNA

Journal of Molecular Biology, 1992
In this paper the values of three free energy parameters governing the superhelical strand separation transition are determined by analysis of available experimental data. These are the free energy, a, needed to initiate a run of separation, the torsional stiffness, C, associated with interstrand winding of the two single strands comprising a separated
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Superhelical DNA in yeast chromosomes

Experimental Cell Research, 1977
S J, McCready, B S, Cox, C S, McLaughlin
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Probing DNA−DNA Electrostatic Friction in Tight Superhelical DNA Plies

The Journal of Physical Chemistry B, 2009
We estimate theoretically the strength of DNA-DNA electrostatic friction forces emerging upon a slow drag of one DNA over another one in a close juxtaposition. For ideally helical DNA duplexes, this friction occurs due to correlations in electrostatic potential near the DNA surface. The latter originate from the intrinsic helicity of DNA phosphates and
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The number of superhelical turns in mitochondrial DNA

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1968
G J, Ruttenberg, E M, Smit, P, Borst, E F, van Bruggen   +3 more
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Superhelical DNA

Trends in Biochemical Sciences, 1980
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Two actions of bleomycin on superhelical DNA

Biochemistry, 1978
S L, Ross, R E, Moses
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Superhelical DNA with local substructures

Journal of Molecular Biology, 1987
James H. White, William R. Bauer
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Environmental influences on DNA superhelicity

Journal of Molecular Biology, 1987
George W. Brady, Michael Satkowski, David Foos, Craig J. Benham   +3 more
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Studies on superhelical DNA

1974
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