4FNH:
reference: Inactivation of the Heme Degrading Enzyme IsdI by an Active Site Substitution That Diminishes Heme Ruffling., Ukpabi G, Takayama SJ, Mauk AG, Murphy ME, J Biol Chem. 2012 Oct 5;287(41):34179-88. doi: 10.1074/jbc.M112.393249. Epub 2012, Aug 13. PMID: 22891243

This OCA Structure page
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