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Literature summary extracted from

  • Kalimuthu, P.; Belaidi, A.; Schwarz, G.; Bernhardt, P.
    Low potential catalytic voltammetry of human sulfite oxidase (2016), Electrochim. Acta, 199, 280-289 .
No PubMed abstract available

Application

EC Number Application Comment Organism
1.8.3.1 analysis an enzyme-coupled electrode is successfully used for the determination of sulfite concentration in white wine and beer samples, enzyme electrode preparation and method evaluation Homo sapiens

Cloned(Commentary)

EC Number Cloned (Comment) Organism
1.8.3.1 recombinant enzyme expression in Escherichia coli strain TP1000 Homo sapiens

Protein Variants

EC Number Protein Variants Comment Organism
1.8.3.1 additional information mediated electrocatalytic voltammetry of human sulfite oxidase (HSO) is demonstrated with synthetic one electron transfer iron complexes bis(1,4,7-triazacyclononane)iron(III) ([Fe(tacn)2]3+) and 1,2-bis(1,4,7-triaza-1-cyclononyl)ethane iron(III) ([Fe(dtne)]3+) at a glassy carbon working electrode, enzyme-dependent kinetics, overview. The HSO coupled electrode is successfully used for the determination of sulfite concentration in white wine and beer samples, and the results validate with a standard spectrophotometric method Homo sapiens

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
1.8.3.1 Iron
-
 Homo sapiens
1.8.3.1 Molybdenum in the catalytic reaction, SO is active in its fully oxidized state (MoVI) in which molybdenum is coordinated by a cysteine thiolate, the dithiolene group of molybdopterin, and two terminal oxygen atoms Homo sapiens

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.8.3.1 sulfite + O2 + H2O Homo sapiens
-
 sulfate + H2O2
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.8.3.1 Homo sapiens P51687
-
-

Reaction

EC Number Reaction Comment Organism Reaction ID
1.8.3.1 sulfite + O2 + H2O = sulfate + H2O2 electrocatalytic mechanism of HSO, overview Homo sapiens
a

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.8.3.1 sulfite + O2 + H2O
-
 Homo sapiens sulfate + H2O2
-
 ?

Synonyms

EC Number Synonyms Comment Organism
1.8.3.1 HSO
-
 Homo sapiens

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.8.3.1 8.5
-
-
 Homo sapiens

pH Range

EC Number pH Minimum pH Maximum Comment Organism
1.8.3.1 6 11 pH dependence of the maximum catalytic oxidation current at the GC/HSO electrode with 4 mM sulfite and in the presence of 10 mM [Fe(tacn)]23+ in 100 mM mixed buffer solution, overview Homo sapiens

Cofactor

EC Number Cofactor Comment Organism Structure
1.8.3.1 cytochrome c natural electron acceptor cytochrome c Homo sapiens
1.8.3.1 heme the heme accepts electrons from the Mo ion following sulfite oxidation, a flexible connects the Mo and heme domains Homo sapiens
1.8.3.1 molybdenum cofactor the heme accepts electrons from the Mo ion following sulfite oxidation, a flexible connects the Mo and heme domains Homo sapiens
1.8.3.1 additional information vertebrate sulfite oxidases can use either cytochrome c or dioxygen as an electron acceptor Homo sapiens