Perturbed soliton excitations in DNA molecular chain

Details Perturbed soliton excitations in DNA molecular chain Perturbed soliton excitations in DNA molecular chain

2006-02-17

arxiv.org/abs/nlin/0602037v2

Physica D 231(2007)10-29

Nonlinear Sciences

Pattern Formation and Solitons

20 Pages, 5 figures

Scientific paper

10.1016/j.physd.2007.04.005

We study nonlinear dynamics of a periodic inhomogeneous DNA double helical chain under dynamic plane-base rotator model by considering angular rotation of bases in a plane normal to the helical axis. The dynamics is governed by a perturbed sine-Gordon equation. The perturbed soliton solution is obtained using a multiple scale soliton perturbation theory. The perturbed kink-antikink solitons represent formation of open state configuration with fluctuation in DNA.

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