Molecular docking studies were carried out using Molecular Operating Environment (MOE 2014.0901) software, Chemical Computing Group, Montreal, Canada, following the docking protocol [36 (link)]. The X-ray crystal structure of the TGF-β (PDB ID: 1VJY) active site was downloaded from the RCSB Protein Date Bank website [37 (link)]. The validity of the used docking protocol was confirmed when the root-mean-square deviation (RMSD) score was less than 1.5 or 2 Å [38 (link)].
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