5UE3:
reference: Discovery of a highly selective chemical inhibitor of matrix metalloproteinase-9 (MMP-9) that allosterically inhibits zymogen activation., Scannevin RH, Alexander R, Mezzasalma Haarlander T, Burke SL, Singer M, Hou C, Zhang YM, Maguire D, Spurlino J, Deckman I, Carroll KI, Lewandowski F, Devine E, Dzordzorme K, Tounge B, Milligan C, Bayoumy S, Williams R, Schalk-Hihi C, Leonard K, Jackson P, Todd M, Kuo LC, Rhodes KJ, J Biol Chem. 2017 Aug 31. pii: jbc.M117.806075. doi: 10.1074/jbc.M117.806075. PMID: 28860188

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