Title : Oxidation of molybdopterin in sulfite oxidase by ferricyanide. Effect on electron transfer activities.

Pub. Date : 1991 Mar 15

PMID : 2002036






5 Functional Relationships(s)
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Protein Name
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1 Oxidation of molybdopterin in sulfite oxidase by ferricyanide. hexacyanoferrate III sulfite oxidase Rattus norvegicus
2 The attenuation of the sulfite:cytochrome c activity of sulfite oxidase upon treatment with ferricyanide was demonstrated to be the result of oxidation of the pterin ring of the molybdenum cofactor in the enzyme. hexacyanoferrate III sulfite oxidase Rattus norvegicus
3 Ferricyanide treatment not only abolished the ability of sulfite oxidase to serve as a source of MPT to reconstitute the aponitrate reductase in extracts of the Neurospora crassa mutant nit-1 but also eliminated the ability of sulfite oxidase to reduce dichlorobenzenoneindophenol after anaerobic denaturation. hexacyanoferrate III sulfite oxidase Rattus norvegicus
4 Ferricyanide treatment not only abolished the ability of sulfite oxidase to serve as a source of MPT to reconstitute the aponitrate reductase in extracts of the Neurospora crassa mutant nit-1 but also eliminated the ability of sulfite oxidase to reduce dichlorobenzenoneindophenol after anaerobic denaturation. hexacyanoferrate III sulfite oxidase Rattus norvegicus
5 Additionally, the absorption spectrum of anaerobically denatured ferricyanide-treated molybdenum fragment of rat liver sulfite oxidase was typical of fully oxidized pterins. hexacyanoferrate III sulfite oxidase Rattus norvegicus