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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 (https://creativecommons.org/licenses/by/4.0/).
The descriptor of the binding site. (a)The binding site occupies a small space in the complex of the protein and the molecule; (b) The binding site and the molecule are connected by non-covalent bond; (c) The constructed box of the binding site.