2G6V:
reference: The Crystal Structure of the Bifunctional Deaminase/Reductase RibD of the Riboflavin Biosynthetic Pathway in Escherichia coli: Implications for the Reductive Mechanism., Stenmark P, Moche M, Gurmu D, Nordlund P, J Mol Biol. 2007 Oct 12;373(1):48-64. Epub 2006 Dec 8. PMID: 17765262

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