3WMB:
reference: A crystal structure-guided rational design switching non-carbohydrate inhibitors' specificity between two beta-GlcNAcase homologs., Liu T, Guo P, Zhou Y, Wang J, Chen L, Yang H, Qian X, Yang Q, Sci Rep. 2014 Aug 26;4:6188. doi: 10.1038/srep06188. PMID: 25155420

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