Parallel RNA secondary structure prediction using stochastic context-free grammars: Research Articles

  • Authors:
  • Tong Liu;Bertil Schmidt

  • Affiliations:
  • School of Computer Engineering, Nanyang Technological University, Singapore 639798;School of Computer Engineering, Nanyang Technological University, Singapore 639798

  • Venue:
  • Concurrency and Computation: Practice & Experience - Third IEEE International Workshop on High Performance Computational Biology (HiCOMB 2004)
  • Year:
  • 2005

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Abstract

With the growing number of known RNA genes efficient and accurate computational analysis of RNA sequences is becoming increasingly important. Stochastic context-free grammars (SCFGs) are used as a popular tool to model RNA secondary structures. However, algorithms for aligning a RNA sequence to a SCFG are highly compute-intensive. This has so far limited applications of SCFGs to relatively small problem sizes. In this paper we present the design of a parallel RNA sequence-structure alignment algorithm. Its implementation on parallel systems leads to significant runtime savings. This makes it possible to compute sequence-structure alignments of even the largest RNAs such as small subunit ribosomal rRNAs and long subunit ribosomal rRNAs in reasonable time. Copyright © 2005 John Wiley & Sons, Ltd.