Extending the geometric build-up algorithm for the molecular distance geometry problem

  • Authors:
  • Ricardo dos Santos Carvalho;Carlile Lavor;Fábio Protti

  • Affiliations:
  • Universidade Federal do Rio de Janeiro (IM/NCE-UFRJ), Caixa Postal 2324, CEP 20001-970, Rio de Janeiro, RJ, Brazil;Universidade Estadual de Campinas (IMECC-UNICAMP), Caixa Postal 6065, CEP 13081-970, Campinas, SP, Brazil;Universidade Federal do Rio de Janeiro (IM/NCE-UFRJ), Caixa Postal 2324, CEP 20001-970, Rio de Janeiro, RJ, Brazil

  • Venue:
  • Information Processing Letters
  • Year:
  • 2008

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Abstract

One of the most important problems in computational biology is the determination of the three-dimensional structure of a protein using the amino acid sequence that generates it. This task can be experimentally performed by using NMR techniques. However, NMR data usually provide only a sparse set of distances between atoms of a molecule. In this case, the aim is to determine its three-dimensional structure using a set of distances for only some pairs of atoms. This problem is known as the Molecular Distance Geometry Problem (MDGP). This work extends the Geometric Build-up Algorithm (GBA) by Dong and Wu, proposed to solve instances of the MDGP. Computational results show that the presented approach, the Extended Geometric Build-up Algorithm (EGBA), is capable of dealing with instances not previously solved by the GBA.