3IR7:
reference: Protein crystallography reveals a role for the FS0 cluster of Escherichia coli nitrate reductase A (NarGHI) in enzyme maturation., Rothery RA, Bertero MG, Spreter T, Bouromand N, Strynadka NC, Weiner JH, J Biol Chem. 2010 Mar 19;285(12):8801-7. Epub 2010 Jan 6. PMID: 20053990

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