A linear biopolymer in the vicinity of the triple point. The homopolymer case

Journal of Biomolecular Structure & Dynamics
M D Frank-Kamenetskiĭ, G I Chogovadze

Abstract

This is a theoretical study of a situation where each residue of a linear biopolymer may adopt one of three conformational states. Such a situation exists in the case of DNA, since it may be in helical A, B, . . ., Z forms as well as the melted state. In the vicinity of the triple point in the phrase diagram three states, e.g. the A form, the B form and the denatured state, co-exist within a given molecule. We present an exact analytical solution of the simplest homopolymer model. Theory predicts that the presence of two helical states in one molecule should affect the helix-coil transition in two ways. The melting temperature experiences an upward shift and the melting range width is increased, by a factor of square root of two as a maximum.

References

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Citations

Jan 10, 1986·Nucleic Acids Research·H MarcaudC Reiss
Jan 1, 1986·Progress in Biophysics and Molecular Biology·A Wada, A Suyama

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