A graph-based genetic algorithm for the multiple sequence alignment problem

  • Authors:
  • Heitor S. Lopes;Guilherme L. Moritz

  • Affiliations:
  • Bioinformatics Laboratory, CPGEI, Federal Technological University of Paraná, Curitiba, PR, Brazil;Bioinformatics Laboratory, CPGEI, Federal Technological University of Paraná, Curitiba, PR, Brazil

  • Venue:
  • ICAISC'06 Proceedings of the 8th international conference on Artificial Intelligence and Soft Computing
  • Year:
  • 2006

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Abstract

We developed a new approach for the multiple sequence alignment problem based on Genetic Algorithms (GA). A new method to represent an alignment is proposed as a multidimensional oriented graph, which dramatically decreases the storage complexity. Details of the proposed GA are explained, including new structure-preserving genetic operators. A sensitivity analysis was done for adjusting running parameters of the GA. Performance of the proposed system was evaluated using a benchmark of hand-aligned sequences (Balibase). Overall, the results obtained are comparable or better to those obtained by a well-known software (Clustal). These results are very promising and suggest more efforts for further developments.