1K17:
reference: Support for a three-dimensional structure predicting a Cys-Glu-Lys catalytic triad for Pseudomonas aeruginosa amidase comes from site-directed mutagenesis and mutations altering substrate specificity., Novo C, Farnaud S, Tata R, Clemente A, Brown PR, Biochem J. 2002 Aug 1;365(Pt 3):731-8. PMID: 11955282

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