Papers › MDRefine: a Python package for refining Molecular Dynamics trajectories with experimental data
MDRefine: a Python package for refining Molecular Dynamics trajectories with experimental data
Ivan Gilardoni, Valerio Piomponi, Thorben Fröhlking, Giovanni Bussi
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Molecular dynamics (MD) simulations play a crucial role in resolving the underlying conformational dynamics of molecular systems. However, their capability to correctly reproduce and predict dynamics in agreement with experiments is limited by the accuracy of the force-field model. This capability can be improved by refining the structural ensembles or the force-field parameters. Furthermore, discrepancies with experimental data can be due to imprecise forward models, namely, functions mapping simulated structures to experimental observables. Here, we introduce MDRefine, a Python package aimed at implementing the refinement of the ensemble, the force-field and/or the forward model by comparing MD-generated trajectories with experimental data. The software consists of several tools that can be employed separately from each other or combined together in different ways, providing a seamless interpolation between these three different types of refinement. We use some benchmark cases to show that the combined approach is superior to separately applied refinements. Source code, documentation and examples are freely available at https://pypi.org/project/MDRefine and https://github.com/bussilab/MDRefine.
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