3ZCZ:
reference: Inhibition of dd-Peptidases by a Specific Trifluoroketone: Crystal Structure of a Complex with the Actinomadura R39 dd-Peptidase., Dzhekieva L, Adediran SA, Herman R, Kerff F, Duez C, Charlier P, Sauvage E, Pratt RF, Biochemistry. 2013 Mar 13. PMID: 23484909

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