Finding motifs in the twilight zone

  • Authors:
  • Uri Keich;Pavel A. Pevzner

  • Affiliations:
  • University of California San Diego, La Jolla, CA;University of California San Diego, La Jolla, CA

  • Venue:
  • Proceedings of the sixth annual international conference on Computational biology
  • Year:
  • 2002

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Abstract

We introduce the notion of a multiprofile and use it for finding subtle motifs in DNA sequences. Multiprofiles generalize the notion of a profile and allow one to detect subtle consensus sequences that escape detection by the standard profiles. Our MULTIPROFILER algorithm outperforms other leading motif finding algorithms in a number of synthetic models. Moreover, it can be shown that in some previously studied motif models, MULTIPROFILER is capable of pushing the performance envelope to its theoretical limits.