PMID: 15244618Jul 13, 2004Paper

Unzipping of DNA with correlated base sequence

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
A E AllahverdyanMing-Chya Wu

Abstract

We consider force-induced unzipping transition for a heterogeneous DNA model with a correlated base sequence. Both finite-range and long-range correlated situations are considered. It is shown that finite-range correlations increase stability of DNA with respect to the external unzipping force. Due to long-range correlations the number of unzipped base pairs displays two widely different scenarios depending on the details of the base sequence: either there is no unzipping phase transition at all, or the transition is realized via a sequence of jumps with magnitude comparable to the size of the system. Both scenarios are different from the behavior of the average number of unzipped base pairs (non-self-averaging). The results can be relevant for explaining the biological purpose of correlated structures in DNA.

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Citations

Mar 22, 2006·Proceedings of the National Academy of Sciences of the United States of America·David B Saakian, Chin-Kun Hu
Aug 16, 2006·Journal of Physics. Condensed Matter : an Institute of Physics Journal·F Ritort
Mar 11, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Somendra M Bhattacharjee
May 23, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·David B SaakianM W Deem
Mar 16, 2007·Physical Review Letters·Rajeev Kapri, Somendra M Bhattacharjee

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