3UAO:
reference: Structure and Catalytic Mechanism of Nicotinate (Vitamin B(3)) Degradative Enzyme Maleamate Amidohydrolase from Bordetella bronchiseptica RB50., Kincaid VA, Sullivan ED, Klein RD, Noel JW, Rowlett RS, Snider MJ, Biochemistry. 2012 Jan 10;51(1):545-54. Epub 2011 Dec 23. PMID: 22214383

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