Citation: Jin Chen, Lin-xi Zhang, De-lu Zhao. LONG-RANGE CORRELATIONS IN DNA SEQUENCES USING TWO-DIMENSIONAL DNA WALKS[J]. Chinese Journal of Polymer Science, ;2005, 23(1): 11-16. shu

LONG-RANGE CORRELATIONS IN DNA SEQUENCES USING TWO-DIMENSIONAL DNA WALKS

Received Date: 1 January 1900
Revised Date: 1 January 1900

The characterization of long-range correlations and fractal properties of DNA sequences has proved to be a difficult though rewarding task mainly due to the mosaic character of DNA consisting of many patches of various lengths with different nucleotide constitutions. In this paper we investigate statistical correlations among different positions in DNA sequences using the two-dimensional DNA walk. The root-mean-square fluctuation F(l) is described by a power law. The autocorrelation function C(l), which is used to measure the linear dependence and periodicity, exists a power law of C(l)  l. We also calculate the mean-square distance along the DNA chain, and it may be expressed as l r with 2 > > 1. Our investigations can provide some insights into long-range correlations in DNA sequences.
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