Bending Dynamics of DNA

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Dr. Subhamoy Singha Roy
Dr. Subhamoy Singha Roy

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GJSFR Volume 18 Issue A6

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It is here pointed out that the local opening of base pairs induces the formation of kinks which facilitates the bending of double helix. The conformational properties of DNA can be mapped onto the Heisenberg spin system and denaturation occurs through quantum phase transition (QPT) induced by a quench when the temperature effect is incorporated through the quench time . The nonequilibrium effect in QPT introduced through the quench generate defects like kinks end antikinks, the density of which depends on the quench time and hence on temperature. It is here argued that when we transcribe this result in the rod -like-chain (RLC) model of DNA, these defects lead to bends. This suggests that we have dynamical generation of kinks leading to the formation of bends during local denaturation.

18 Cites in Articles

References

  1. C Bustamante,J Marko,E Siggia,S Smith (1994). Unknown Title.
  2. C Bouchiat,M Mézard (1997). Elasticity Model of a Supercoiled DNA Molecule.
  3. Timothy Cloutier,Jonathan Widom (2004). Spontaneous Sharp Bending of Double-Stranded DNA.
  4. F Crick,A Klug (1975). Unknown Title.
  5. A Vologodskii,M D. Frank-Kamenetskii (2013). Strong bending of the DNA double helix.
  6. S,Singha Roy,P Bandyopadhyay (2013). Unknown Title.
  7. S,Singha Roy,P Bandyopadhyay (2015). Unknown Title.
  8. R Schutzhold (2005). Unknown Title.
  9. Matthias Vojta (2013). Quantum phase transitions.
  10. T Kibble (1976). Unknown Title.
  11. W Zurek (1985). Unknown Title.
  12. Banasri Basu,Pratul Bandyopadhyay,Priyadarshi Majumdar (2012). Magnetic-field dependence of the entanglement entropy of one-dimensional spin systems in quantum phase transitions induced by a quench.
  13. L Cincio (2007). Unknown Title.
  14. Banasri Basu,Pratul Bandyopadhyay,Priyadarshi Majumdar (2011). Density of defects and the scaling law of the entanglement entropy in quantum phase transition of one-dimensional spin systems induced by a quench.
  15. J Bednar (1995). Unknown Title.
  16. Philip Nelson (1999). Transport of torsional stress in DNA.
  17. S Roy (2017). Unknown Title.
  18. S,Singha Roy,P Bandyopadhyay (2018). Unknown Title.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Dr. Subhamoy Singha Roy. 2018. \u201cBending Dynamics of DNA\u201d. Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 18 (GJSFR Volume 18 Issue A6): .

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GJSFR Volume 18 Issue A6
Pg. 21- 23
Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-A Classification: FOR Code: 020302
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v1.2

Issue date

August 22, 2018

Language

English

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It is here pointed out that the local opening of base pairs induces the formation of kinks which facilitates the bending of double helix. The conformational properties of DNA can be mapped onto the Heisenberg spin system and denaturation occurs through quantum phase transition (QPT) induced by a quench when the temperature effect is incorporated through the quench time . The nonequilibrium effect in QPT introduced through the quench generate defects like kinks end antikinks, the density of which depends on the quench time and hence on temperature. It is here argued that when we transcribe this result in the rod -like-chain (RLC) model of DNA, these defects lead to bends. This suggests that we have dynamical generation of kinks leading to the formation of bends during local denaturation.

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Bending Dynamics of DNA

Dr. Subhamoy Singha Roy
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