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

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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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References
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Journal ArticleDOI

Sequence Similarity Search Using Discrete Fourier and Wavelet Transformation Techniques

TL;DR: The proposed transformation techniques may easily be integrated as a pre-processing phase on top of current similarity search heuristics/techniques such as BLAST, PatternHunter, FastA and QUASAR to efficiently prune non-relevant sequences.
Journal ArticleDOI

An automated annotation tool for genomic DNA sequences using GeneScan and BLAST.

TL;DR: A method is presented for analysis of genomic DNA to identify coding sequences using the GeneScan algorithm and characterize these resultant sequences by BLAST to develop a system for automated annotation of genome DNA sequences.
Journal ArticleDOI

Identification of latent periodicity in amino acid sequences of protein families

TL;DR: For detection of the latent periodicity of the protein families responsible for various biological functions, methods of information decomposition, cyclic profile alignment, and the method of noise decomposition have been used.
Journal ArticleDOI

Identification of protein coding regions of rice genes using alternative spectral rotation measure and linear discriminant analysis.

TL;DR: An improved method, called Alternative Spectral Rotation (ASR) measure, for predicting protein coding regions in rice DNA has been developed and its accuracy is higher than that of the SR measure and the Spectral Content (SC) measure proposed by Tiwari et al.
Proceedings ArticleDOI

Non-Stationary Analysis of DNA Sequences

TL;DR: It is shown, using an index of randomness that is derived from the frequency-time distribution of the genomic signals, that coding sequences are "more random" than non-coding sequences, likely the source of confusion and controversy in previous work, which relied on stationary analysis of DNA correlations.
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