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Dynamical model based on finite stacking enthalpies for homogeneous and inhomogeneous DNA thermal denaturation

Marc Joyeux, Sahin Buyukdagli

physics.bio-pharXiv:physics/0508189

Abstract

We present a nonlinear dynamical model for DNA thermal denaturation, which is based on the finite stacking enthalpies used in thermodynamical nearest-neighbour calculations. Within this model, the finiteness of stacking enthalpies is shown to be responsible for the sharpness of calculated melting curves. Transfer-integral and molecular dynamics calculations are performed to demonstrate that the proposed model leads to good agreement with known experimental results for both homogeneous and inhomogeneous DNA.

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