Add time:08/14/2019         Source:sciencedirect.com

A penalty function is introduced into molecular dynamics simulations that improves on current methods for enforcing nuclear magnetic resonance-based distance restraints. Rather than treating nuclear Overhauser effects as static distance bounds, they are considered as quantities that must be satisfied on average over the course of a simulation trajectory.The efficacy of the method is demonstrated on the previously determined structure of tendamistat. The molecular dynamics simulations show that the time-averaged constraints increase the mobility allowed to molecules, produce better agreement with distance bounds, improve searching properties and give a better estimate of the conformational space occupied by the molecule in solution.

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