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An all atom energy based computational protocol for predicting binding affinities of protein–ligand complexes
Author(s) -
Jain Tarun,
Jayaram B.
Publication year - 2005
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2005.10.031
Subject(s) - affinities , binding affinities , ligand (biochemistry) , protein ligand , chemistry , transferability , van der waals force , function (biology) , conformational entropy , computational chemistry , computational biology , stereochemistry , computer science , biology , machine learning , biochemistry , genetics , molecule , receptor , organic chemistry , logit
We report here a computationally fast protocol for predicting binding affinities of non‐metallo protein–ligand complexes. The protocol builds in an all atom energy based empirical scoring function comprising electrostatics, van der Waals, hydrophobicity and loss of conformational entropy of protein side chains upon ligand binding. The method is designed to ensure transferability across diverse systems and has been validated on a heterogenous dataset of 161 complexes consisting of 55 unique protein targets. The scoring function trained on a dataset of 61 complexes yielded a correlation of r = 0.92 for the predicted binding free energies against the experimental binding affinities. Model validation and parameter analysis studies ensure the predictive ability of the scoring function. When tested on the remaining 100 protein–ligand complexes a correlation of r = 0.92 was recovered. The high correlation obtained underscores the potential applicability of the methodology in drug design endeavors. The scoring function has been web enabled at www.scfbio‐iitd.res.in/software/drugdesign/bappl.jsp as binding affinity prediction of protein–ligand (BAPPL) server.