4YVA:
reference: Affinity Crystallography: A New Approach to Extracting High-Affinity Enzyme Inhibitors from Natural Extracts., Aguda AH, Lavallee V, Cheng P, Bott TM, Meimetis LG, Law S, Nguyen NT, Williams DE, Kaleta J, Villanueva I, Davies J, Andersen RJ, Brayer GD, Bromme D, J Nat Prod. 2016 Aug 26;79(8):1962-70. doi: 10.1021/acs.jnatprod.6b00215. Epub, 2016 Aug 6. PMID: 27498895

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