CorGen-measuring and generating long-range correlations for DNA sequence 
analysis

Messer, Philipp W.; Arndt, Peter F.

doi:10.1093/nar/gkl234

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CorGen-measuring and generating long-range correlations for DNA sequence analysis

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Messer, Philipp W.
Max Planck Society;

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Arndt, Peter F.
Evolutionary Genomics (Peter Arndt), Dept. of Computational Molecular Biology (Head: Martin Vingron), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Citation

Messer, P. W., & Arndt, P. F. (2006). CorGen-measuring and generating long-range correlations for DNA sequence analysis. Nucleic Acids Research, 34, W692-W695. doi:10.1093/nar/gkl234.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-8461-4

Abstract

CorGen is a web server that measures long-range correlations in the base composition of DNA and generates random sequences with the same correlation parameters. Long-range correlations are characterized by a power-law decay of the auto correlation function of the GC-content. The widespread presence of such correlations in eukaryotic genomes calls for their incorporation into accurate null models of eukaryotic DNA in computational biology. For example, the score statistics of sequence alignment and the performance of motif finding algorithms are significantly affected by the presence of genomic long-range correlations. We use an expansion-randomization dynamics to efficiently generate the correlated random sequences. The server is available at http://corgen.molgen.mpg.de