Issue
EPL
Volume 78, Number 3, May 2007
Article Number 38004
Number of page(s) 6
Section Interdisciplinary Physics and Related Areas of Science and Technology
DOI http://dx.doi.org/10.1209/0295-5075/78/38004
Published online 19 April 2007
EPL, 78 (2007) 38004
DOI: 10.1209/0295-5075/78/38004

High amplitude mode and DNA opening

S. Zdravkovic1 and M. V. Sataric2

1  Fakultet tehnickih nauka, Univerzitet u Pristini - Kosovska Mitrovica, Serbia
2  Fakultet tehnickih nauka, Univerzitet u Novom Sadu - 21000 Novi Sad, Serbia

szdravk@etf.bg.ac.yu

received 3 January 2007; accepted in final form 22 March 2007; published May 2007
published online 19 April 2007

Abstract
In this article, we define and analyse an extremely high amplitude (EHA) mode in DNA dynamics. The dynamics of a DNA chain is described by the Peyrard-Bishop-Dauxois model. We show that a local opening of the DNA chain in a process of m-RNA transcription is the EHA behaviour. Also, we point out that the helicoidal structure brings about the possibility for the EHA mode to occur.

PACS
87.15.-v - Biomolecules: structure and physical properties.
31.15.Qg - Molecular dynamics and other numerical methods.
87.14.Gg - DNA, RNA.

© Europhysics Letters Association 2007