Molecular Kinetics: Sampling, Design and Machine Learning
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The last few years have seen breakthroughs in our ability to simulate and measure the kinetics and functional mechanism of macromolecular systems such as proteins. Using special-purpose hardware or GPU clusters, direct molecular dynamics (MD) simulations can reach milliseconds [1-2]. With methods based on Markov modeling, transition path sampling or hyperdynamics, kinetics and mechanisms can be simulated that involve events on the timescales of seconds and beyond [3-4]. Recently, deep machine learning (ML) methods have had an impact in terms of increasing automation and accuracy of these these approaches [6-7]. Arguably, the main current limitation of the field of molecular kinetics theory is that it doesn't go beyond describing a given simulation setup, i.e. it doesn't yet attempt to scale, e.g. across the space of protein sequences which would be relevant to connect to the genomic revolution and to perform in silico design of functional properties such as enzyme turnover.
On the other hand, ML has had significant impact in the field of quantum mechanics (QM) and material design [8-9] where predicting quantities such as formation energies across chemical space is a fundamental part of the problem setting and has resulted into very sophisticated ways of learning transferable predictors that yield high accuracy and now allow QM-accuracy MD simulations [10-11]. Arguably, the main current limitation of this field is that it aims at mainly predicting microscopic quantities such as potential energies or forces. The efficient and accurate computation of thermodynamic or kinetic expectation values is likely "the next big problem" faced by this community, which would benefit from input by Statistical Mechanics and MD experts.
These two communities can learn and benefit from each other in order to develop new areas such as "transferable molecular kinetics" or "chemical quantum kinetics" that may facilitate the design of efficient enzymes, long-residence drugs or materials with properties that are not only a function of the crystal structure alone.
Carsten Hartmann (Brandenburgische Technische Universität Cottbus-Senftenberg) - Organiser
Gerhard Hummer (Max Planck Institute of Biophysics) - Organiser
Bettina Keller (Freie Universität Berlin) - Organiser
Frank Noe (Free University of Berlin) - Organiser
Simon Olsson (Freie Universität Berlin) - Organiser
Christof Schuette (FU Berlin AND Zuse Institute Berlin) - Organiser
John Chodera (Memorial Sloan Kettering Cancer Center) - Organiser
Cecilia Clementi (Freie Universität Berlin) - Organiser