Title
A computational approach to increase time scales in Brownian dynamics-based reaction-diffusion modeling.
Abstract
Particle-based Brownian dynamics simulations offer the opportunity to not only simulate diffusion of particles but also the reactions between them. They therefore provide an opportunity to integrate varied biological data into spatially explicit models of biological processes, such as signal transduction or mitosis. However, particle based reaction-diffusion methods often are hampered by the relatively small time step needed for accurate description of the reaction-diffusion framework. Such small time steps often prevent simulation times that are relevant for biological processes. It is therefore of great importance to develop reaction-diffusion methods that tolerate larger time steps while maintaining relatively high accuracy. Here, we provide an algorithm, which detects potential particle collisions prior to a BD-based particle displacement and at the same time rigorously obeys the detailed balance rule of equilibrium reactions. We can show that for reaction-diffusion processes of particles mimicking proteins, the method can increase the typical BD time step by an order of magnitude while maintaining similar accuracy in the reaction diffusion modelling.
Year
DOI
Venue
2012
10.1089/cmb.2012.0027
JOURNAL OF COMPUTATIONAL BIOLOGY
Keywords
Field
DocType
Brownian dynamics,protein-protein interactions,reaction-diffusion
Biological data,Artificial intelligence,Molecular dynamics,Statistical physics,Detailed balance,Particle displacement,Simulation,Brownian dynamics,Reaction–diffusion system,Machine learning,Mathematics,Particle,Chemical equilibrium
Journal
Volume
Issue
ISSN
19.0
6
1066-5277
Citations 
PageRank 
References 
5
0.56
4
Authors
2
Name
Order
Citations
PageRank
Zach Frazier1291.39
Frank Alber2334.63