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PROFASI: A Monte Carlo simulation package for protein folding and aggregation
Anders Irbäck1, Sandipan Mohanty
1Complex Systems Division, Department of Theoretical Physics, Lund University, Sölvegatan 14A, SE-223 62 Lund, Sweden. anders@thep.lu.se
Journal of Computational Chemistry
|July 19, 2006
Summary
We developed PROFASI, a C++ program package for protein folding and aggregation simulations. This efficient tool models proteins with all-atom detail and implicit water, aiding peptide folding and unfolding studies.
Area of Science:
- Computational Biology
- Biophysics
- Molecular Modeling
Background:
- Protein folding and aggregation are crucial biological processes.
- Simulating these processes requires efficient computational tools.
- Existing methods may lack flexibility or efficiency.
Purpose of the Study:
- To present PROFASI, a flexible and efficient C++ program package.
- To enable simulations of protein folding and aggregation.
- To provide a modular platform for modifying interaction potentials.
Main Methods:
- All-atom description of protein chains with torsional degrees of freedom.
- Implicit water model.
- Monte Carlo-based simulation methods including semilocal moves and simulated tempering.
- Modular code structure for easy updates and potential modification.
Main Results:
- Successfully folded several peptides of approximately 20 residues.
- Studied protein aggregation and force-induced unfolding.
- Demonstrated fast performance in both single- and multi-chain applications.
- The modular design facilitates easy integration of new features.
Conclusions:
- PROFASI offers a flexible and efficient solution for simulating protein folding and aggregation.
- The package supports detailed molecular modeling and various simulation techniques.
- Its performance and modularity make it a valuable tool for biophysical research.