5MVO:
reference: Crystallization and preliminary crystallographic studies of FoxE from Rhodobacter ferrooxidans SW2, an Fe(II) oxidoreductase involved in photoferrotrophy., Pereira L, Saraiva IH, Coelho R, Newman DK, Louro RO, Frazao C, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2012 Sep 1;68(Pt 9):1106-8., doi: 10.1107/S174430911203271X. Epub 2012 Aug 31. PMID: 22949206

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