Protein sub-cellular localisation prediction by analysis of short-range residue correlations

  • Authors:
  • Jian Guo;Yuanlie Lin;Zhirong Sun

  • Affiliations:
  • Laboratory of Statistical Computing and Bioinformatics, Department of Mathematical Sciences, Tsinghua University, Beijing 100084, PR China.;Laboratory of Statistical Computing and Bioinformatics, Department of Mathematical Sciences, Tsinghua University, Beijing 100084, PR China.;MOE Key Lab of Bioinformatics, State Key Lab of Biomembrane and Membrane Biotechnology, Institute of Bioinformatics, Department of Biological Sciences and Biotechnology, Tsinghua University, Beiji ...

  • Venue:
  • International Journal of Bioinformatics Research and Applications
  • Year:
  • 2006

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Abstract

Sub-cellular localisation performs an important role in genome analysis. This paper describes a new residue-couple model using a support vector machine to predict the sub-cellular localisation of proteins. This new approach provides better predictions than the existing methods. The total prediction accuracies on Reinhardt and Hubbard's dataset reach 92.0% for prokaryotic protein sequences and 86.9% for eukaryotic protein sequences with fivefold cross validation. For a new dataset with 8304 proteins located in eight sub-cellular locations, the total accuracy achieves 88.9%. Meanwhile, the model shows robust against N-terminal errors in the sequences.