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A Protocol for Functional Assessment of Whole-Protein Saturation Mutagenesis Libraries Utilizing High-Throughput Sequencing
Published on: July 3, 2016
Comprehensive in silico mutagenesis highlights functionally important residues in proteins
1Department of Biochemistry Molecular Biophysics, Columbia University, 630 West 168th St, New York, NY 10032, USA. yb2009@columbia.edu
Bioinformatics (Oxford, England)
|August 12, 2008
Summary
Alanine scanning mutagenesis experiments can be computationally predicted using SNAP. This in silico method accurately identifies functional hotspots in proteins, aiding in experimental design and reducing costs.
Area of Science:
- Biochemistry
- Computational Biology
- Protein Science
Background:
- Alanine scanning mutagenesis is a key experimental technique for identifying protein functional hotspots.
- In vitro mutagenesis is labor-intensive and costly, limiting exhaustive residue analysis.
- In silico mutagenesis offers a feasible alternative for comprehensive protein residue analysis.
Purpose of the Study:
- To evaluate the performance of the SNAP tool in predicting functional changes from alanine scanning mutagenesis data.
- To apply SNAP for comprehensive in silico mutagenesis of human glucokinase.
- To identify potential functional hotspots in human glucokinase for experimental validation.
Main Methods:
- Application of the SNAP tool to analyze experimental mutations in the ASEdb database.
- In silico all-against-all mutagenesis of human glucokinase using SNAP.
- Analysis of predicted changes in binding energy (kcal/mol) to identify functional hotspots.
Main Results:
- SNAP successfully identified 70% of experimental functional hotspots from alanine scanning data.
- Prediction accuracy for functional hotspots increased with the severity of the mutation's effect.
- Comprehensive in silico mutagenesis of human glucokinase predicted numerous functionally important residues.
Conclusions:
- The SNAP tool accurately predicts functional consequences of protein mutations.
- In silico mutagenesis with SNAP can guide and accelerate experimental mutagenesis strategies.
- Predicted functional residues in human glucokinase require further experimental verification.
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