3CSX:
reference: Structural characterization of the protein cce_0567 from Cyanothece 51142, a metalloprotein associated with nitrogen fixation in the DUF683 family., Buchko GW, Robinson H, Addlagatta A, Biochim Biophys Acta. 2009 Apr;1794(4):627-33. Epub 2009 Jan 23. PMID: 19336042

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