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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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Multi-Harmony: detecting functional specificity from sequence alignment.

Bernd W Brandt1, K Anton Feenstra, Jaap Heringa

  • 1Centre for Integrative Bioinformatics, VU University Amsterdam, De Boelelaan 1081A, 1081HV Amsterdam, The Netherlands.

Nucleic Acids Research
|June 8, 2010
PubMed
Summary
This summary is machine-generated.

Identifying specific amino acids is key to understanding protein function. The multi-Harmony web server aids this by detecting sub-type-specific sites in proteins using improved Sequence Harmony and multi-Relief methods.

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Last Updated: Jun 12, 2026

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Protein Science

Background:

  • Protein families often exhibit functional specialization through sub-families.
  • Specific amino acid residues are generally responsible for this functional specificity.
  • Identifying these residues is crucial for understanding protein function and guiding experimental analysis.

Purpose of the Study:

  • To present multi-Harmony, an interactive web server for detecting sub-type-specific amino acid sites in proteins.
  • To combine and improve upon the Sequence Harmony (SH) and multi-Relief (mR) methods for analyzing specificity residues.
  • To facilitate simultaneous analysis and comparison of specificity residues within protein families.

Main Methods:

  • Developed the multi-Harmony web server integrating Sequence Harmony (SH) and multi-Relief (mR) methods.
  • Extended SH to handle more than two sub-groups.
  • Modified mR from a sampling to a deterministic implementation for improved consistency and user-friendliness.
  • Incorporated Z-scores reporting for both methods.

Main Results:

  • The multi-Harmony server enables the detection of sub-type-specific sites from multiple sequence alignments.
  • Both SH and mR methods within the server have been significantly improved and extended.
  • The server provides Z-scores for assessing the significance of identified specificity residues.
  • Dynamic output pages with interactive connections to Jalview and Jmol applets facilitate result analysis.

Conclusions:

  • Multi-Harmony offers an improved and integrated platform for identifying functional specificity residues in proteins.
  • The web server enhances the understanding of protein function and aids in selecting targets for experimental validation.
  • Interactive visualization tools integrated within multi-Harmony improve the analysis of specificity determinants.