Unzipping of DNA with correlated base sequence
Copyright policy )Unzipping of DNA with correlated base sequence
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.
22 pages, revtex4, 14 eps figures; reprinted in the June 15, 2004 issue of Virtual Journal of Biological Physics Research
- Alikhanyan National Laboratory Armenia
- University of Amsterdam Netherlands
- Institute of Radiophysics and Electronics Armenia
- Academia Sinica Taiwan
- Institute for Theoretical Physics Amsterdam Netherlands
Models, Molecular, Leucine Zippers, Stochastic Processes, Models, Statistical, Base Sequence, Nucleotides, Molecular Sequence Data, Statistics as Topic, FOS: Physical sciences, DNA, Sequence Analysis, DNA, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Soft Condensed Matter, Condensed Matter - Disordered Systems and Neural Networks, Elasticity, Models, Chemical, Nucleic Acid Conformation, Soft Condensed Matter (cond-mat.soft), Computer Simulation, Stress, Mechanical, Base Pairing
Models, Molecular, Leucine Zippers, Stochastic Processes, Models, Statistical, Base Sequence, Nucleotides, Molecular Sequence Data, Statistics as Topic, FOS: Physical sciences, DNA, Sequence Analysis, DNA, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Soft Condensed Matter, Condensed Matter - Disordered Systems and Neural Networks, Elasticity, Models, Chemical, Nucleic Acid Conformation, Soft Condensed Matter (cond-mat.soft), Computer Simulation, Stress, Mechanical, Base Pairing
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