1L6J:
reference: Structure of the C-terminally truncated human ProMMP9, a gelatin-binding matrix metalloproteinase., Elkins PA, Ho YS, Smith WW, Janson CA, D'Alessio KJ, McQueney MS, Cummings MD, Romanic AM, Acta Crystallogr D Biol Crystallogr 2002 Jul;58(Pt 7):1182-92. PMID: 12077439

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