Improved protein fold assignment using support vector machines

  • Authors:
  • Robert E. Langlois;Alice Diec;Ognjen Perisic;Yang Dai;Hui Lu

  • Affiliations:
  • Department of Bioengineering, University of Illinois at Chicago, IL 60607, USA.;Department of Bioengineering, University of Illinois at Chicago, IL 60607, USA.;Department of Bioengineering, University of Illinois at Chicago, IL 60607, USA.;Department of Bioengineering, University of Illinois at Chicago, IL 60607, USA.;Department of Bioengineering, University of Illinois at Chicago, IL 60607, USA

  • Venue:
  • International Journal of Bioinformatics Research and Applications
  • Year:
  • 2005

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Abstract

Because of the relatively large gap of knowledge between number of protein sequences and protein structures, the ability to construct a computational model predicting structure from sequence information has become an important area of research. The knowledge of a protein's structure is crucial in understanding its biological role. In this work, we present a support vector machine based method for recognising a protein's fold from sequence information alone, where this sequence has less similarity with sequences of known structures. We have focused on improving multi-class classification, parameter tuning, descriptor design, and feature selection. The current implementation demonstrates better prediction accuracy than previous similar approaches, and has similar performance when compared with straightforward threading.