PDBbind v.2013 core set prepared

<p dir="ltr">PDBbind v.2013 core set manually curated to optimize the hydrogen bond network considering protein and ligand protonation states.</p><p dir="ltr">The description of this dataset preparation is published in the following reference:</p><p dir="ltr">Guedes, I. A.; Barreto, A. M. S.; Marinho, D.; Krempser, E.; Kuenemann, M. A.; Sperandio, O.; Dardenne, L. E.; Miteva, M. A. New Machine Learning and Physics-Based Scoring Functions for Drug Discovery. <i>Sci Rep</i> <b>2021</b>, <i>11</i> (1), 3198. <a href="https://doi.org/10.1038/s41598-021-82410-1" target="_blank">https://doi.org/10.1038/s41598-021-82410-1</a>.</p>