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Updated: May 31, 2026
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A Protocol for Computer-Based Protein Structure and Function Prediction
Published on: November 3, 2011
Refinement of protein termini in template-based modeling using conformational space annealing
Hahnbeom Park1, Junsu Ko, Keehyoung Joo
1Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea.
Proteins
|July 15, 2011
Summary
This study introduces a novel protein terminus modeling method to refine unreliable structures. The approach significantly improves accuracy, offering a new strategy for protein structure refinement.
Area of Science:
- Structural Biology
- Computational Biology
- Biophysics
Background:
- Template-based modeling provides reliable protein tertiary structure models.
- Refinement of template-based models is crucial for understanding protein function at atomic detail.
- Existing methods struggle with refining unreliable terminus structures.
Purpose of the Study:
- To develop a new method for protein terminus modeling.
- To refine protein models with unreliable terminus structures.
- To improve the accuracy of protein tertiary structure models.
Main Methods:
- Developed a new energy function for terminus modeling, combining physics-based and knowledge-based potentials.
- Utilized conformational space annealing for effective sampling of framework and terminus.
- Optimized relative weights of potential terms.
Main Results:
- The new terminus modeling method significantly improved performance over previous approaches.
- The method demonstrated comparable or superior results to top-performing server methods in CASP8.
- Successfully refined terminus structures in tested datasets.
Conclusions:
- The developed method is effective for refining protein models with unreliable termini.
- This strategy shows potential for application in other refinement problems like loop modeling.
- Advances in protein structure modeling are critical for functional analysis.
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