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microTaboo: a general and practical solution to the k-disjoint problem.

Mohammed Al-Jaff1, Eric Sandström1, Manfred Grabherr2,3

  • 1Department of Medical Biochemistry and Microbiology, Uppsala University, 75123, Uppsala, Sweden.

BMC Bioinformatics
|May 4, 2017
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Summary

This study introduces microTaboo, a novel bioinformatics tool for identifying unique DNA sequences. microTaboo efficiently finds k-disjoint sequences, crucial for diagnostics and reducing off-target genetic analysis.

Keywords:
Sequence miningSoftwarek-disjoint problem

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Area of Science:

  • Bioinformatics
  • Genomics
  • Computational Biology

Background:

  • Identifying unique subsequences in large genomic datasets is a significant bioinformatics challenge.
  • Existing k-mer counting methods lack the stringency for applications requiring sequences to differ by more than k mismatches (k-disjoint problem).
  • Applications include pathogen detection, reducing off-target effects in genetic analyses, and identifying sequence insertions or mutations.

Purpose of the Study:

  • To develop an efficient method for identifying k-disjoint sequences.
  • To address the need for stringent uniqueness definitions in sequence analysis.
  • To provide a solution for various applications in molecular diagnostics and genetic research.

Main Methods:

  • The study presents microTaboo, a novel sequence mining method.
  • microTaboo efficiently identifies unique subsequences up to 100 nucleotides in length.
  • The method operates in an alignment- and assembly-free manner.

Main Results:

  • microTaboo successfully identifies all k-disjoint subsequences within specified length (W) and mismatch (k) thresholds.
  • The tool demonstrated efficiency on diverse datasets, from microbial to mammalian genomes.
  • Practical applications were exemplified, including point substitution and sequence insertion detection, padlock probe target identification, and CRISPR target mining.

Conclusions:

  • microTaboo provides an effective solution to the k-disjoint problem.
  • The method is alignment- and assembly-free, enhancing its applicability.
  • microTaboo is available as a Java-based application for multiple operating systems.