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Literature DB >> 267934

Elastic model of supercoiling.

Abstract

An elastic model for the supercoiling of duplex DNA is developed. The simplest assumptions regarding the elastic properties of double-helical DNA (homogeneous, isotropic, of circular cross section, and remaining straight when unstressed) will generate two orders of superhelicity when stressed. Recent experimental results [Brady, G.W., Fein, D.B. & Brumberger, H. (1976) Nature 264, 231-234] suggest that in supercoiled DNA molecules there are regions where two distinct orders of supercoiling arise, as predicted by this model.

Mesh：

Substances：
DNA

Year: 1977 PMID： 267934 PMCID： PMC432179 DOI： 10.1073/pnas.74.6.2397

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

11 in total

1. X-ray diffraction studies of circular superhelical DNA at 300-10,000-A resolution.

Authors: G W Brady; D B Fein
Journal: Nature Date: 1976-11-18 Impact factor: 49.962

2. Action of nicking-closing enzyme on supercoiled and nonsupercoiled closed circular DNA: formation of a Boltzmann distribution of topological isomers.

Authors: D E Pulleyblank; M Shure; D Tang; J Vinograd; H P Vosberg
Journal: Proc Natl Acad Sci U S A Date: 1975-11 Impact factor: 11.205

3. Organization of DNA in chromatin.

Authors: H M Sobell; C C Tsai; S G Gilbert; S C Jain; T D Sakore
Journal: Proc Natl Acad Sci U S A Date: 1976-09 Impact factor: 11.205

4. Linking numbers and nucleosomes.

Authors: F H Crick
Journal: Proc Natl Acad Sci U S A Date: 1976-08 Impact factor: 11.205

5. The interaction of closed circular DNA with intercalative dyes. I. The superhelix density of SV40 DNA in the presence and absence of dye.

Authors: W Bauer; J Vinograd
Journal: J Mol Biol Date: 1968-04-14 Impact factor: 5.469

6. Further analysis of the altered secondary structure of superhelical DNA. Sensitivity to methylmercuric hydroxide a chemical probe for unpaired bases.

Authors: T A Beerman; J Lebowitz
Journal: J Mol Biol Date: 1973-09-25 Impact factor: 5.469

7. Variation of the average rotation angle of the DNA helix and the superhelical turns of covalently closed cyclic lambda DNA.

Authors: J C Wang
Journal: J Mol Biol Date: 1969-07-14 Impact factor: 5.469

9. Bridging chromatin structure and function over a range of experimental spatial and temporal scales by molecular modeling.

Authors: Stephanie Portillo-Ledesma; Tamar Schlick
Journal: Wiley Interdiscip Rev Comput Mol Sci Date: 2019-08-06

10. Multiscale modeling of nucleic acids: insights into DNA flexibility.

Authors: Yannick J Bomble; David A Case
Journal: Biopolymers Date: 2008-09 Impact factor: 2.505

Elastic model of supercoiling.

1. X-ray diffraction studies of circular superhelical DNA at 300-10,000-A resolution.

2. Action of nicking-closing enzyme on supercoiled and nonsupercoiled closed circular DNA: formation of a Boltzmann distribution of topological isomers.

3. Organization of DNA in chromatin.

4. Linking numbers and nucleosomes.

5. The interaction of closed circular DNA with intercalative dyes. I. The superhelix density of SV40 DNA in the presence and absence of dye.

6. Further analysis of the altered secondary structure of superhelical DNA. Sensitivity to methylmercuric hydroxide a chemical probe for unpaired bases.

7. Variation of the average rotation angle of the DNA helix and the superhelical turns of covalently closed cyclic lambda DNA.

8. Partial alteration of secondary structure in native superhelical DNA.

9. Flexibility of native DNA from the sedimentation behavior as a function of molecular weight and temperature.

10. The writhing number of a space curve.

1. Nucleosome repositioning via loop formation.

2. Statistical mechanics of sequence-dependent circular DNA and its application for DNA cyclization.

3. Modulating DNA configuration by interfacial traction: an elastic rod model to characterize DNA folding and unfolding.

4. A simple model of DNA superhelices in solution.

5. An elastic rod model to evaluate effects of ionic concentration on equilibrium configuration of DNA in salt solution.

6. 1H nuclear magnetic resonance investigation of flexibility in DNA.

7. X-ray scattering from randomly oriented superhelices. Circular superhelical DNA.

8. X-ray scattering from the superhelix in circular DNA.

9. Bridging chromatin structure and function over a range of experimental spatial and temporal scales by molecular modeling.

10. Multiscale modeling of nucleic acids: insights into DNA flexibility.