1GJQ:
reference: Cyanide binding to cd(1) nitrite reductase from Pseudomonas aeruginosa: role of the active-site His369 in ligand stabilization., Sun W, Arese M, Brunori M, Nurizzo D, Brown K, Cambillau C, Tegoni M, Cutruzzola F, Biochem Biophys Res Commun 2002 Feb 15;291(1):1-7. PMID: 11829453

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