1W3K:
reference: Structural, thermodynamic, and kinetic analyses of tetrahydrooxazine-derived inhibitors bound to beta-glucosidases., Gloster TM, Macdonald JM, Tarling CA, Stick RV, Withers SG, Davies GJ, J Biol Chem. 2004 Nov 19;279(47):49236-42. Epub 2004 Sep 8. PMID: 15356002

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