5M69:
reference: How Nothing Boosts Affinity: Hydrophobic Ligand Binding to the Virtually Vacated S1' Pocket of Thermolysin., Krimmer SG, Cramer J, Schiebel J, Heine A, Klebe G, J Am Chem Soc. 2017 Aug 2;139(30):10419-10431. doi: 10.1021/jacs.7b05028. Epub, 2017 Jul 24. PMID: 28696673

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