5TMN:
reference: Slow- and fast-binding inhibitors of thermolysin display different modes of binding: crystallographic analysis of extended phosphonamidate transition-state analogues., Holden HM, Tronrud DE, Monzingo AF, Weaver LH, Matthews BW, Biochemistry 1987 Dec 29;26(26):8542-53. PMID: 3442675

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