Title
Entropic and Enthalpic Contributions to Stereospecific Ligand Binding from Enhanced Sampling Methods.
Abstract
The stereoselective binding of R- and S-propranolol to the metabolic enzyme cytochrome P450 2D6 and its mutant F483A was studied using various computational approaches. Previously reported free-energy differences from Hamiltonian replica exchange simulations, combined with thermodynamic integration, are compared to the one-step perturbation approach, combined with local-elevation enhanced sampling, and an excellent agreement between methods was obtained. Further, the free-energy differences are interpreted in terms of enthalpic and entropic contributions where it is shown that exactly compensating contributions obscure a molecular interpretation of differences in the affinity while various reduced terms allow a more detailed analysis, which agree with heuristic observations on the interactions.
Year
DOI
Venue
2014
10.1021/ci4006657
JOURNAL OF CHEMICAL INFORMATION AND MODELING
Field
DocType
Volume
Thermodynamics,Hamiltonian (quantum mechanics),Ligand (biochemistry),Ligand,Combinatorial chemistry,Computational chemistry,Chemistry,Stereospecificity,Sampling (statistics),Thermodynamic integration,Protein structure
Journal
54
Issue
ISSN
Citations 
1
1549-9596
3
PageRank 
References 
Authors
0.50
13
4
Name
Order
Citations
PageRank
Balder Lai130.50
Gabor Nagy233620.76
Jose Antonio Garate371.28
Chris Oostenbrink429738.41