4JIJ:
reference: Halogen Bonding Controls Selectivity of FRET Substrate Probes for MMP-9., Tranchant I, Vera L, Czarny B, Amoura M, Cassar E, Beau F, Stura EA, Dive V, Chem Biol. 2014 Feb 25. pii: S1074-5521(14)00031-3. doi:, 10.1016/j.chembiol.2014.01.008. PMID: 24583051

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