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Related Experiment Videos

COBALT: constraint-based alignment tool for multiple protein sequences.

Jason S Papadopoulos1, Richa Agarwala

  • 1National Center for Biotechnology Information, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20894, USA.

Bioinformatics (Oxford, England)
|March 3, 2007
PubMed
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COBALT is a new protein sequence alignment tool that uses constraints for improved accuracy and speed. It offers practical advantages over existing methods for multiple sequence alignment.

Area of Science:

  • Bioinformatics
  • Computational Biology
  • Genomics

Background:

  • Multiple protein sequence alignment is crucial for understanding protein function and evolution.
  • Existing tools often face limitations in balancing speed, accuracy, and the utilization of domain information.
  • A novel tool is needed to address these challenges in protein sequence analysis.

Purpose of the Study:

  • To introduce COBALT, a constraint-based alignment tool for multiple protein sequence alignment.
  • To demonstrate the effectiveness of incorporating protein domain and motif information into the alignment process.
  • To evaluate COBALT's performance in terms of speed and accuracy compared to existing tools.

Main Methods:

  • COBALT implements a general framework for progressive multiple alignment.

Related Experiment Videos

  • It derives pairwise constraints from database searches, sequence similarity, and user input.
  • Constraints from Conserved Domain Database (CDD) and PROSITE protein-motif database are integrated.

    • Main Results:

    • COBALT demonstrates improved alignment quality when utilizing constraints from CDD and PROSITE.
    • The tool exhibits reasonable runtime performance.
    • Alignment accuracy is comparable to or exceeds that of other leading alignment tools across various datasets.

    Conclusions:

    • COBALT offers a practical and effective solution for multiple protein sequence alignment.
    • The constraint-based approach, particularly with domain information, enhances alignment quality.
    • COBALT provides a valuable addition to bioinformatics toolkits for sequence analysis.