Analyses of DNA Base Sequences for Eukaryotes in Terms of Power Spectrum Method

概要

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By adopting a power spectrum method we have analyzed long-range correlations in the gene base sequences, exons and introns for five or six eukaryote species. As a measure of the long-range correlations, we have used an exponent $\alpha$ in $1/f^{\alpha}$, which is an approximation of a power spectrum in a low-frequency region. We have analyzed frequency distributions of $\alpha$ and the dependence of its average values $\langle\alpha\rangle$ on the sequence length for the five or six species, paying particular attention to the species dependence. We have shown that long-range correlations have been formed mainly due to the intron's elongation as well as by the sequence structures of introns acquired over the course of evolution.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2005-02-15