Free energy calculations of A2Aadenosine receptor mutation effects on agonist binding

2015 ◽  
Vol 51 (17) ◽  
pp. 3522-3525 ◽  
Author(s):  
Henrik Keränen ◽  
Johan Åqvist ◽  
Hugo Gutiérrez-de-Terán
Keyword(s):  
Free Energy ◽  
Ligand Binding ◽  
Single Point ◽  
Point Mutations ◽  
Free Energy Calculations ◽  
Computational Scheme ◽  
Agonist Binding ◽  
Energy Calculations ◽  
Single Point Mutations

A general computational scheme to evaluate the effects of single point mutations on ligand binding is reported.

scholarly journals Alchemical Absolute Protein-Ligand Binding Free Energies for Drug Design

2021 ◽  
Author(s):  
Yuriy Khalak ◽  
Gary Tresdern ◽  
Matteo Aldeghi ◽  
Hannah Magdalena Baumann ◽  
David L. Mobley ◽  
...  
Keyword(s):  
Free Energy ◽  
Drug Discovery ◽  
Drug Design ◽  
Ligand Binding ◽  
Binding Free Energy ◽  
Free Energy Calculations ◽  
Free Energies ◽  
Energy Calculations ◽  
Binding Free Energy Calculations ◽  
Binding Free Energies

The recent advances in relative protein-ligand binding free energy calculations have shown the value of alchemical methods in drug discovery. Accurately assessing absolute binding free energies, although highly desired, remains...

Ab Initio Free Energy Calculations at Multiple Electronic Structure Levels Made Affordable: An Effective Combination of Perturbation Theory and Machine Learning

2020 ◽  
Author(s):  
Tomas Bucko ◽  
Monika Gešvandtnerová ◽  
Dario Rocca
Keyword(s):  
Machine Learning ◽  
Free Energy ◽  
Perturbation Theory ◽  
Ab Initio ◽  
Single Point ◽  
Free Energy Calculations ◽  
Thermodynamic Quantities ◽  
Free Energies ◽  
Energy Calculations ◽  
Ab Initio Theory

<div>While free energies are fundamental thermodynamic quantities to characterize chemical reactions, their calculation based on ab initio theory is usually limited by the high computational cost. This is particularly true if multiple levels of theory have to be tested to establish their relative accuracy, if highly expensive quantum mechanical approximations are of interest, and also if several different temperatures have to be considered. We present an ab initio approach that effectively couples perturbation theory and machine learning to make ab initio free energy calculations more affordable. Starting from results based on a certain production ab initio theory, perturbation theory is applied to obtain free energies. The large number of single point calculations required by a brute force application of this approach are here significantly decreased by applying machine learning techniques. Importantly, the </div><div>training of the machine learning model requires only a small amount of data and does not need to be </div><div>performed again when the temperature is decreased.</div><div>The accuracy and efficiency of this method is demonstrated by computing the free energy of activation of the </div><div>proton exchange reaction in the zeolite chabazite. Starting from an ab initio calculation based on a semilocal</div><div>approximation of density functional theory, free energies based on significantly </div><div>more expensive non-local van der Waals and hybrid functionals are obtained with only a few tens</div><div>of additional single point calculations. In this way this work paves the route to</div><div>quick free energy calculations using different levels of theory or approximations that would be</div><div>too computationally expensive to be directly employed in molecular dynamics or Monte Carlo simulations.</div>

Free Energy Calculations to Estimate Ligand-Binding Affinities in Structure-Based Drug Design

2014 ◽  
Vol 20 (20) ◽  
pp. 3323-3337 ◽  
Author(s):  
M. Reddy ◽  
C. Reddy ◽  
R. Rathore ◽  
Mark Erion ◽  
P. Aparoy ◽  
...  
Keyword(s):  
Free Energy ◽  
Drug Design ◽  
Ligand Binding ◽  
Free Energy Calculations ◽  
Binding Affinities ◽  
Structure Based Drug Design ◽  
Energy Calculations

scholarly journals Large scale free energy calculations for blind predictions of protein–ligand binding: the D3R Grand Challenge 2015

2016 ◽  
Vol 30 (9) ◽  
pp. 743-751 ◽  
Author(s):  
Nanjie Deng ◽  
William F. Flynn ◽  
Junchao Xia ◽  
R. S. K. Vijayan ◽  
Baofeng Zhang ◽  
...  
Keyword(s):  
Free Energy ◽  
Ligand Binding ◽  
Large Scale ◽  
Free Energy Calculations ◽  
Grand Challenge ◽  
Energy Calculations ◽  
Scale Free ◽  
D3r Grand Challenge 2015
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