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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) The 2D diagram for the docking pose of the oxindole ligand in CDK4 binding site; (B) 3D illustration of the superimposition for the docking pose (green) and the added (red) oxindole ligand in the CDK4 binding site (RMSD = 0.879 Å).