Markov State Models to Elucidate Ligand Binding Mechanism

Yunhui Ge, Vincent A. Voelz

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

7 Scopus citations

Abstract

Molecular dynamics simulations can now routinely access the microsecond timescale, making feasible direct sampling of ligand association events. While Markov State Model (MSM) approaches offer a useful framework for analyzing such trajectory data to gain insight into binding mechanisms, accurate modeling of ligand association pathways and kinetics must be done carefully. We describe methods and good practices for constructing MSMs of ligand binding from unbiased trajectory data and discuss how to use time-lagged independent component analysis (tICA) to build informative models, using as an example recent simulation work to model the binding of phenylalanine to the regulatory ACT domain dimer of phenylalanine hydroxylase. We describe a variety of methods for estimating association rates from MSMs and discuss how to distinguish between conformational selection and induced-fit mechanisms using MSMs. In addition, we review some examples of MSMs constructed to elucidate the mechanisms by which p53 transactivation domain (TAD) and related peptides bind the oncoprotein MDM2.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages239-259
Number of pages21
DOIs
StatePublished - 2021
Externally publishedYes

Publication series

NameMethods in Molecular Biology
Volume2266
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • Allostery
  • Binding rates
  • Conformational selection
  • Dimensionality reduction
  • Induced-fit
  • Kinetic network models
  • Ligand association pathways
  • Molecular dynamics simulation
  • Protein–protein interactions
  • Time-lagged independent component analysis (tICA)

Fingerprint

Dive into the research topics of 'Markov State Models to Elucidate Ligand Binding Mechanism'. Together they form a unique fingerprint.

Cite this