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Updated: Jul 7, 2026
16:41
A Protocol for Computer-Based Protein Structure and Function Prediction
Published on: November 3, 2011
A template-finding algorithm and a comprehensive benchmark for homology modeling of proteins
Brinda Kizhakke Vallat1, Jaroslaw Pillardy, Ron Elber
1Department of Computer Science, Cornell University, Upson Hall 4130, Ithaca, New York 14853, USA.
Proteins
|February 27, 2008
Summary
This study introduces a novel decision tree method for identifying accurate protein templates in homology modeling. The approach significantly improves template detection accuracy compared to existing methods like PSI-BLAST.
Area of Science:
- Computational biology
- Structural bioinformatics
- Protein structure prediction
Background:
- Homology modeling is crucial for protein structure prediction, relying on identifying suitable template structures.
- Accurate template identification is a critical bottleneck in the homology modeling pipeline.
Purpose of the Study:
- To develop an improved method for identifying reliable protein templates for homology modeling.
- To enhance the accuracy and efficiency of template selection using a machine learning approach.
Main Methods:
- A large-scale dataset of protein sequence pairs was constructed from the Protein Data Bank (PDB).
- A decision tree classifier was trained using discriminatory learning on millions of true and false template matches.
- Each decision tree branch incorporated a mathematical programming model for refined discrimination.
Main Results:
- The developed decision tree model demonstrated significant enrichment of true templates (50-100%) over PSI-BLAST on independent PDB sets and CASP7 sequences.
- Verification using Modeller confirmed that high TM structural-alignment scores correlate with the generation of acceptable atomically detailed structural models.
Conclusions:
- The novel decision tree approach offers a substantial improvement in identifying correct protein templates for homology modeling.
- This method enhances the reliability of structural model generation by improving the quality of template selection.
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01:24Protein Organization
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The primary structure of a protein is its amino acid sequence.
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01:13Protein Organization
Overview
01:24Protein Organization
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The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
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