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Related Experiment Videos

Beyond complete genomes: from sequence to structure and function

E V Koonin1, R L Tatusov, M Y Galperin

  • 1National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA. koonin@ncbi.nlm.nih.gov

Current Opinion in Structural Biology
|July 17, 1998
PubMed
Summary
This summary is machine-generated.

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Analyzing microbial proteins reveals conserved regions, enabling precise function prediction and superfamily identification. This computational approach complements traditional experimental methods in genomics.

Area of Science:

  • Genomics
  • Bioinformatics
  • Structural Biology

Background:

  • Microbial proteins exhibit significant conservation, with ~70% containing ancient conserved regions.
  • This conservation facilitates the delineation of orthologous protein families across diverse phylogenetic groups.

Purpose of the Study:

  • To leverage conserved protein regions for precise function prediction.
  • To unify orthologous families into superfamilies using sequence analysis.
  • To explore the prediction of structural folds and catalytic residues within superfamilies.

Main Methods:

  • Computational analysis of complete prokaryotic genomes.
  • Application of sensitive algorithms for sequence database searches.
  • Comparison of protein sequences and structures.

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Main Results:

  • Identification of conserved regions in approximately 70% of microbial proteins.
  • Delineation of orthologous families and prediction of protein functions.
  • Unification of orthologous families into superfamilies with shared motifs.
  • Prediction of structural folds and catalytic residues for many superfamilies.

Conclusions:

  • Sequence and structure comparisons offer a powerful computational methodology.
  • This approach effectively complements traditional experimental techniques in biological research.