Recurrent use of evolutionary importance for functional annotation of proteins based on local structural similarity

David M. Kristensen, Brian Y. Chen, Viacheslav Y. Fofanov, R. Matthew Ward, Andreas Martin Lisewski, Marek Kimmel, Lydia E. Kavraki, Olivier Lichtarge

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


The annotation of protein function has not kept pace with the exponential growth of raw sequence and structure data. An emerging solution to this problem is to identify 3D motifs or templates in protein structures that are necessary and sufficient determinants of function. Here, we demonstrate the recurrent use of evolutionary trace information to construct such 3D templates for enzymes, search for them in other structures, and distinguish true from spurious matches. Serine protease templates built from evolutionarily important residues distinguish between proteases and other proteins nearly as well as the classic Ser-His-Asp catalytic triad. In 53 enzymes spanning 33 distinct functions, an automated pipeline identifies functionally related proteins with an average positive predictive power of 62%, including correct matches to proteins with the same function but with low sequence identity (the average identity for some templates is only 17%). Although these template building, searching, and match classification strategies are not yet optimized, their sequential implementation demonstrates a functional annotation pipeline which does not require experimental information, but only local molecular mimicry among a small number of evolutionarily important residues.

Original languageEnglish (US)
Pages (from-to)1530-1536
Number of pages7
JournalProtein Science
Issue number6
StatePublished - Jun 2006
Externally publishedYes


  • Evolution
  • Function prediction
  • Proteome annotation
  • Structural genomics
  • Structural motif

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology


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