Warning: Undefined array key "mm" in /www/wwwroot/www.ai-bt.com/si.php on line 10 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/www.ai-bt.com/si.php on line 10 New measurements of DNA twist elasticity.

Literature DB >> 9591676

New measurements of DNA twist elasticity.

Abstract

The symmetries of the DNA double helix require a new term in its linear response to stress: the coupling between twist and stretch. Recent experiments with torsionally constrained single molecules give the first direct measurement of this new material parameter. We extract its value from a recent experiment. Finally, we sketch the effect of constrained twist on entropic elasticity of DNA arising from the connection between Link, Twist, and Writhe.

Mesh：

Substances：
DNA

Year: 1998 PMID： 9591676 PMCID： PMC1299592 DOI： 10.1016/S0006-3495(98)77958-5

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

10 in total

1. Stretching DNA with optical tweezers.

Authors: M D Wang; H Yin; R Landick; J Gelles; S M Block
Journal: Biophys J Date: 1997-03 Impact factor: 4.033

2. Direct mechanical measurements of the elasticity of single DNA molecules by using magnetic beads.

Authors: S B Smith; L Finzi; C Bustamante
Journal: Science Date: 1992-11-13 Impact factor: 47.728

3. Decomposition of the linking number of a closed ribbon: A problem from molecular biology.

Authors: F B Fuller
Journal: Proc Natl Acad Sci U S A Date: 1978-08 Impact factor: 11.205

4. DNA: an extensible molecule.

Authors: P Cluzel; A Lebrun; C Heller; R Lavery; J L Viovy; D Chatenay; F Caron
Journal: Science Date: 1996-02-09 Impact factor: 47.728

5. Overstretching B-DNA: the elastic response of individual double-stranded and single-stranded DNA molecules.

Authors: S B Smith; Y Cui; C Bustamante
Journal: Science Date: 1996-02-09 Impact factor: 47.728

6. Extension of torsionally stressed DNA by external force.

Authors: A V Vologodskii; J F Marko
Journal: Biophys J Date: 1997-07 Impact factor: 4.033

7. Statistical mechanics of supercoils and the torsional stiffness of the DNA double helix.

Authors: A V Vologodskii; V V Anshelevich; A V Lukashin; M D Frank-Kamenetskii
Journal: Nature Date: 1979-07-26 Impact factor: 49.962

8. The elasticity of a single supercoiled DNA molecule.

Authors: T R Strick; J F Allemand; D Bensimon; A Bensimon; V Croquette
Journal: Science Date: 1996-03-29 Impact factor: 47.728

9. Entropic elasticity of lambda-phage DNA.

Authors: C Bustamante; J F Marko; E D Siggia; S Smith
Journal: Science Date: 1994-09-09 Impact factor: 47.728

10. The helicity of DNA in complexes with recA protein.

Authors: A Stasiak; E Di Capua
Journal: Nature Date: 1982-09-09 Impact factor: 49.962

10 in total

6 in total

New measurements of DNA twist elasticity.

1. Stretching DNA with optical tweezers.

2. Direct mechanical measurements of the elasticity of single DNA molecules by using magnetic beads.

3. Decomposition of the linking number of a closed ribbon: A problem from molecular biology.

4. DNA: an extensible molecule.

5. Overstretching B-DNA: the elastic response of individual double-stranded and single-stranded DNA molecules.

6. Extension of torsionally stressed DNA by external force.

7. Statistical mechanics of supercoils and the torsional stiffness of the DNA double helix.

8. The elasticity of a single supercoiled DNA molecule.

9. Entropic elasticity of lambda-phage DNA.

10. The helicity of DNA in complexes with recA protein.

1. Atomic force microscopy reveals the mechanical design of a modular protein.

2. Evaluation of elastic properties of atomistic DNA models.

3. BIOPHYSICAL PROPERTIES OF NUCLEIC ACIDS AT SURFACES RELEVANT TO MICROARRAY PERFORMANCE.

4. Conformational Analysis of Stiff Chiral Polymers with End-Constraints.

Review 5. Group theory and biomolecular conformation: I. Mathematical and computational models.

6. Mechanical properties of symmetric and asymmetric DNA A-tracts: implications for looping and nucleosome positioning.