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Hierarchical structure of cascade of primary and secondary periodicities in Fourier power spectrum of alphoid higher order repeats.

TLDR
DFT provides a robust detection method for higher order periodicity and is robust with respect to monomer insertions and deletions, random sequence insertions etc.
Abstract
Background Identification of approximate tandem repeats is an important task of broad significance and still remains a challenging problem of computational genomics. Often there is no single best approach to periodicity detection and a combination of different methods may improve the prediction accuracy. Discrete Fourier transform (DFT) has been extensively used to study primary periodicities in DNA sequences. Here we investigate the application of DFT method to identify and study alphoid higher order repeats.

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Citations
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Journal ArticleDOI

Origin of multiple periodicities in the Fourier power spectra of the Plasmodium falciparum genome.

TL;DR: Fourier transforms and their associated power spectra are used for detecting periodicities and protein-coding genes and are generally regarded as a well established technique, but in the case of P. falciparum the frequency aliases are particularly strong and can mask the 1/3 frequency which is used for gene detecting.
Journal ArticleDOI

Genome packaging within icosahedral capsids and large-scale segmentation in viral genomic sequences.

TL;DR: Fourier analysis of genomic sequences provides the additional insight into mechanisms of hierarchical genome packaging and may be used for verification of the concepts of 3-fold or 5-fold intermediates in virion assembly.
Journal ArticleDOI

Structural attributes of nucleotide sequences in promoter regions of supercoiling-sensitive genes: how to relate microarray expression data with genomic sequences.

TL;DR: F Fourier analysis of promoter sequences for supercoiling-sensitive genes reveals the tendency in selection of sequences with helical periodicities close to 10nt for relaxation-induced genes and to 11nt for Relaxation-repressed genes.
Journal ArticleDOI

Large-scale chromosome folding versus genomic DNA sequences: A discrete double Fourier transform technique.

TL;DR: An original discrete double Fourier transform (DDFT) serves for the detection of large-scale genome regularities associated with domains/units at the different levels of hierarchical chromosome folding and can be applied to both genomic DNA sequences and corresponding physico-chemical parameters such as base-pairing free energy.
Journal ArticleDOI

Spectral sum rules and search for periodicities in DNA sequences

V.R. Chechetkin
- 18 Apr 2011 - 
TL;DR: It is shown that the restrictions imposed on the significance criteria by the rigorous spectral sum rules can be rationally described with De Finetti distribution, which provides the convenient intermediate asymptotic form between Rayleigh distribution and exact combinatoric theory.
References
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Journal ArticleDOI

Long-range correlations in nucleotide sequences

TL;DR: This work proposes a method for studying the stochastic properties of nucleotide sequences by constructing a 1:1 map of the nucleotide sequence onto a walk, which it refers to as a 'DNA walk', and uncovers a remarkably long-range power law correlation.
Journal ArticleDOI

The DNA sequence of human chromosome 22

Ian Dunham, +223 more
- 02 Dec 1999 - 
TL;DR: The sequence of the euchromatic part of human chromosome 22 is reported, which consists of 12 contiguous segments spanning 33.4 megabases, contains at least 545 genes and 134 pseudogenes, and provides the first view of the complex chromosomal landscapes that will be found in the rest of the genome.
Journal ArticleDOI

Recognition of protein coding regions in DNA sequences

TL;DR: The test has been thoroughly proven on 400,000 bases of sequence data: it misclassifies 5% of the regions tested and gives an answer of "No Opinion" one fifth of the time.
Journal ArticleDOI

The mosaic genome of warm-blooded vertebrates.

TL;DR: This approach has revealed that the distribution of genes, integrated viral sequences, and interspersed repeats is highly nonuniform in the genome, and that the base composition and ratio of CpG to GpC in both coding and noncoding sequences, as well as codon usage, mainly depend on the GC content of the isochores harboring the sequences.
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