1YUX:
reference: High-resolution crystal structures of Desulfovibrio vulgaris (Hildenborough) nigerythrin: facile, redox-dependent iron movement, domain interface variability, and peroxidase activity in the rubrerythrins., Iyer RB, Silaghi-Dumitrescu R, Kurtz DM Jr, Lanzilotta WN, J Biol Inorg Chem 2005 Jun;10(4):407-16. Epub 2005 May 14. PMID: 15895271

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