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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/).
3D-surface representation of the predicted binding mode of C1–8 to the active site of S. aureus Sortase A (PDB 1IJA). The small active site pocket does not seem able to accommodate the pentacyclic compounds.