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Annual Review of Biophysics

Volume 49, 2020

Milestoning: An Efficient Approach for Atomically Detailed Simulations of Kinetics in Biophysics

Abstract

Recent advances in theory and algorithms for atomically detailed simulations open the way to the study of the kinetics of a wide range of molecular processes in biophysics. The theories propose a shift from the traditionally very long molecular dynamic trajectories, which are exact but may not be efficient in the study of kinetics, to the use of a large number of short trajectories. The short trajectories exploit a mapping to a mesh in coarse space and allow for efficient calculations of kinetics and thermodynamics. In this review, I focus on one theory: Milestoning is a theory and an algorithm that offers a hierarchical calculation of properties of interest, such as the free energy profile and the mean first passage time. Approximations to the true long-time dynamics can be computed efficiently and assessed at different steps of the investigation. The theory is discussed and illustrated using two biophysical examples: ion permeation through a phospholipid membrane and protein translocation through a channel.

Keyword(s): channels, enhanced sampling, membranes, molecular dynamics, rate calculations, reaction coordinate
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2020-05-06
2024-04-26
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Milestoning: An Efficient Approach for Atomically Detailed Simulations of Kinetics in Biophysics
Annual Review of Biophysics 49, 69 (2020); https://doi.org/10.1146/annurev-biophys-121219-081528
/content/journals/10.1146/annurev-biophys-121219-081528
/content/journals/10.1146/annurev-biophys-121219-081528
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