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Journal Articles Bioinformatics Year : 2018

Knotty: efficient and accurate prediction of complex RNA pseudoknot structures

Hosna Jabbari
  • Function : Author
Ian Wark
  • Function : Author
Carlo Montemagno
  • Function : Author

Abstract

The computational prediction of RNA secondary structure by free energy minimization has become an important tool in RNA research. However in practice, energy minimization is mostly limited to pseudoknot-free structures or rather simple pseudoknots, not covering many biologically important structures such as kissing hairpins. Algorithms capable of predicting sufficiently complex pseudoknots (for sequences of length n) used to have extreme complexities, e.g. Pknots has O(n6) time and O(n4) space complexity. The algorithm CCJ dramatically improves the asymptotic run time for predicting complex pseudoknots (handling almost all relevant pseudoknots, while being slightly less general than Pknots), but this came at the cost of large constant factors in space and time, which strongly limited its practical application (∼200 bases already require 256 GB space).

Dates and versions

hal-02908990 , version 1 (29-07-2020)

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Cite

Hosna Jabbari, Ian Wark, Carlo Montemagno, Sebastian Will. Knotty: efficient and accurate prediction of complex RNA pseudoknot structures. Bioinformatics, 2018, 34 (22), pp.3849-3856. ⟨10.1093/bioinformatics/bty420⟩. ⟨hal-02908990⟩
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