Results 91 to 100 of about 184 (130)
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Sulfite sensitivity and sulfite oxidase actiivty inDrosophila melanogaster
Biochemical Genetics, 1993The relationship between sulfite oxidase (SO) and sulfite sensitivity in Drosophila melanogaster is addressed. Significant improvements to the SO assay have provided an investigative tool which can be applied to further studies of this molybdoenzyme. Using the second-instar larval stage of D, melanogaster, we have shown a direct relationship between ...
A C, Braaten, M M, Bentley
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Biochemical Journal, 2015
Mammalian sulfite oxidase (SO) is a dimeric enzyme consisting of a molybdenum cofactor- (Moco) and haem-containing domain and catalyses the oxidation of toxic sulfite to sulfate. Following sulfite oxidation, electrons are passed from Moco via the haem cofactor to cytochrome c, the terminal electron acceptor.
Abdel A, Belaidi +5 more
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Mammalian sulfite oxidase (SO) is a dimeric enzyme consisting of a molybdenum cofactor- (Moco) and haem-containing domain and catalyses the oxidation of toxic sulfite to sulfate. Following sulfite oxidation, electrons are passed from Moco via the haem cofactor to cytochrome c, the terminal electron acceptor.
Abdel A, Belaidi +5 more
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Mediated, anaerobic voltammetry of sulfite oxidase
Analytical Chemistry, 1990The anaerobic voltammetry of the Mo/Fe enzyme, sulfite oxidase (SO), is described for the mediators cytochrome c, [Ru(NH3)6]3+/2+, TMPD+/0, and [Co(bpy)3]3+/2+. Theory derived for steady-state voltammetric catalysis correctly predicts the observed concentration and scan-rate dependencies of the catalytic waves.
L A, Coury +6 more
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Radiation inactivation of hepatic sulfite oxidase
Archives of Biochemistry and Biophysics, 1987Sulfite oxidase (EC 1.8.3.1), purified from chicken liver, is comprised of two identical subunits of 55 kDa, each of which contains a molybdenum and heme prosthetic group. The functional size of sulfite oxidase was determined by radiation inactivation analysis using both full, sulfite:cytochrome c reductase, and partial, sulfite:ferricyanide reductase,
M J, Barber +2 more
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Sulfite determination: Sulfite oxidase
1987Publisher Summary This chapter discusses the sulfite determination. Sulfite and sulfite adducts—for example, aldehyde-bisulfite addition compounds—are distributed in very low concentrations in plants and animals. Their physiological importance is unknown.
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A Model for Ferricyanide-Inhibited Sulfite Oxidase
Inorganic Chemistry, 1999Sulfite:cytochrome c activity in the pyranopterin molybdenum enzyme sulfite oxidase is inhibited by ferricyanide.
Matthew E., Helton, Martin L., Kirk
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Measurement of Sulfite Using Sulfite Oxidase and Luminol Chemiluminescence
Analytical Communications, 1997Measurement of sulfite using sulfite oxidase and luminol chemiluminescence was performed. Sulfite oxidase from chicken liver was immobilized in a reactor column filled with polysaccharide gel beads. The effects of buffer solution, hydrogen peroxide concentration and sulfite concentration on the chemiluminescence intensity were examined.
Satoshi Sasaki +3 more
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Reciprocal regulation of sulfite oxidation and nitrite reduction by mitochondrial sulfite oxidase
Nitric Oxide, 2019The oxygen-independent nitrate-nitrite-nitric oxide (NO) pathway is considered as a substantial source of NO in mammals. Dietary nitrate/nitrite are distributed throughout the body and reduced to NO by the action of various enzymes. The intermembrane spaced (IMS), molybdenum cofactor-dependent sulfite oxidase (SO) was shown to catalyze such a nitrite ...
Alexander T, Kaczmarek +3 more
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Evaluation of a Sulfite Oxidase Enzyme Electrode for Determination of Sulfite in Beer
Journal of the American Society of Brewing Chemists, 1990An alternative method of determining sulfite in beer using a sulfite oxidase enzyme electrode was evaluated at sulfite levels of 0-75 μg/ml. Comparisons were made with the ASBC standard method, which requires the use of pararosaniline for color ...
Dean Fassnidge, Earl Van Engel
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Sulfite oxidase from Merluccius productus
Biochimica et Biophysica Acta (BBA) - Enzymology, 1980Sulfite oxidase (sulfite:oxygen oxidoreductase, EC 1.8.3.1) was purified 482-fold from liver of the Pacific hake Merluccius productus. The molecular weight of the enzyme was found to be 120 000 by gel exclusion chromatography on Sephadex G-100. Electrophoretic analysis on sodium dodecyl sulfate (SDS)-polyacrylamide gel revealed that the enzyme was ...
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