4JM3:
reference: Structural and Functional Characterization of MppR, an Enduracididine Biosynthetic Enzyme from Streptomyces hygroscopicus: Functional Diversity in the Acetoacetate Decarboxylase-like Superfamily., Burroughs AM, Hoppe RW, Goebel NC, Sayyed BH, Voegtline TJ, Schwabacher AW, Zabriskie TM, Silvaggi NR, Biochemistry. 2013 Jul 2;52(26):4492-506. doi: 10.1021/bi400397k. Epub 2013 Jun, 21. PMID: 23758195

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