PMID:9257686

Citation	Hunter, DJ, Moody, AJ, Rich, PR and Ingledew, WJ (1997) EPR spectroscopy of Escherichia coli cytochrome bo which lacks CuB. FEBS Lett. 412:43-7
Abstract	The spectroscopic and ligand-binding properties of a copper-deficient cytochrome bo3, a member of the haem-copper superfamily of terminal oxidases, are reported and contrasted with those of the native enzyme. The enzyme lacks the copper atom (CuB) which is normally an integral part of the catalytic site. The consequences of loss of the CuB are the loss of antiferromagnetic coupling to the high-spin haem and an inability to form any of the integer-spin derivatives of the enzyme. Low-spin compounds of the normally high-spin haem are still formed with appropriate ligands, although these are modified.
Links	PubMed
Keywords	Azides/metabolism; Binding Sites; Catalysis; Copper/analysis; Cyanides/metabolism; Cytochrome b Group; Cytochromes/chemistry; Cytochromes/metabolism; Electron Spin Resonance Spectroscopy; Escherichia coli/chemistry; Escherichia coli Proteins; Fluorides/pharmacology; Formates/pharmacology; Oxidation-Reduction; Structure-Activity Relationship; Sulfides/pharmacology
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