2E7E:
reference: Alternative cyanide-binding modes to the haem iron in haem oxygenase., Sugishima M, Oda K, Ogura T, Sakamoto H, Noguchi M, Fukuyama K, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2007 Jun 1;63(Pt, 6):471-4. Epub 2007 May 31. PMID: 17554165

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