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Extracting protein alignment models from the sequence database

A F Neuwald1, J S Liu, D J Lipman

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

Nucleic Acids Research
|May 1, 1997
PubMed
Summary
This summary is machine-generated.

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Probe software automates protein family model construction from single sequences. This method identifies conserved patterns, revealing new protein relationships and supporting the ancient origins of proteins.

Area of Science:

  • Bioinformatics
  • Computational Biology
  • Protein Science

Background:

  • Protein structural and functional insights are often derived from multiple sequence alignment models.
  • Automating this process is crucial for large-scale biological data analysis.

Purpose of the Study:

  • To introduce Probe, a program that fully automates multiple sequence alignment model construction from a single protein sequence.
  • To present a novel method for identifying and aligning conserved patterns within protein families.

Main Methods:

  • Development of the Probe software utilizing a new pattern-finding algorithm.
  • Application of Probe to randomly selected proteins to assess its performance against pairwise searches.

Main Results:

Related Experiment Videos

  • Probe identified approximately four times more protein relationships than traditional pairwise searches.
  • Discoveries include a novel globin subfamily in *Caenorhabditis elegans*, two new metallohydrolase superfamilies, a lipoyl/biotin domain in bacterial proteins, and a DH domain in yeast proteins.

Conclusions:

  • The findings support the hypothesis that proteins evolved from a limited set of ancient sequences.
  • Automated model generation by Probe enables rapid and sensitive screening of novel protein sequences.