2DM5:
reference: Thermodynamic penalty arising from burial of a ligand polar group within a hydrophobic pocket of a protein receptor., Barratt E, Bronowska A, Vondrasek J, Cerny J, Bingham R, Phillips S, Homans SW, J Mol Biol. 2006 Oct 6;362(5):994-1003. Epub 2006 Aug 1. PMID: 16935302

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