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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
(A) Per-residue decomposition free energy of the three chalcone/EGFR-TK complexes and (B) their binding orientation inside the ATP-binding pocket of the TK domain drawn from the last MD snapshot, where the energy contour of residue contribution for ligand binding is shaded.