1R2K:
reference: Structure of the molybdenum-cofactor biosynthesis protein MoaB of Escherichia coli., Bader G, Gomez-Ortiz M, Haussmann C, Bacher A, Huber R, Fischer M, Acta Crystallogr D Biol Crystallogr 2004 Jun;60(Pt 6):1068-75. Epub 2004, May 21. PMID: 15159566

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