Differentiable rotamer sampling with molecular force fields.

Brief Bioinform

Department of Engineering Science and Mechanics, Penn State University, University Park, PA USA.

Published: November 2023

AI Article Synopsis

  • Molecular dynamics (MD) is widely used in structural biology to study the structure and function of macromolecules.
  • Boltzmann generators offer a new method by using generative neural networks to simulate molecular systems more quickly than traditional MD, but they currently face theoretical and computational challenges.
  • This study establishes a solid mathematical basis for Boltzmann generators, proving they can effectively replace MD in certain scenarios involving complex macromolecules like proteins, and introduces tools for navigating molecular energy landscapes with neural networks.

Article Abstract

Molecular dynamics (MD) is the primary computational method by which modern structural biology explores macromolecule structure and function. Boltzmann generators have been proposed as an alternative to MD, by replacing the integration of molecular systems over time with the training of generative neural networks. This neural network approach to MD enables convergence to thermodynamic equilibrium faster than traditional MD; however, critical gaps in the theory and computational feasibility of Boltzmann generators significantly reduce their usability. Here, we develop a mathematical foundation to overcome these barriers; we demonstrate that the Boltzmann generator approach is sufficiently rapid to replace traditional MD for complex macromolecules, such as proteins in specific applications, and we provide a comprehensive toolkit for the exploration of molecular energy landscapes with neural networks.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10720392PMC
http://dx.doi.org/10.1093/bib/bbad456DOI Listing

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