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. 2020 Oct 27;35(4):433–451. doi: 10.1007/s10822-020-00354-6

Fig. 3.

Fig. 3

Histogram of Ligand Z-score of the difference density (ZDD) distributions for ligands from 55 CSAR structures refined using QM/MM method and conventional PHENIX. The lower the ZDD the more accurate the model versus the experimental density