4V0I:
reference: Differential Water Thermodynamics Determine PI3K-Beta/Delta Selectivity for Solvent-Exposed Ligand Modifications., Robinson D, Bertrand T, Carry JC, Halley F, Karlsson A, Mathieu M, Minoux H, Perrin MA, Robert B, Schio L, Sherman W, J Chem Inf Model. 2016 May 23;56(5):886-94. doi: 10.1021/acs.jcim.5b00641. Epub, 2016 May 4. PMID: 27144736

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