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1.8.3.1: sulfite oxidase

This is an abbreviated version!
For detailed information about sulfite oxidase, go to the full flat file.

Word Map on EC 1.8.3.1

Reaction

sulfite
+
O2
+
H2O
=
sulfate
+
H2O2

Synonyms

At-SO, AtSOX, CG7280, HSO, NIA, oxidase, sulfite, PSO, Shopper, SO, SorT, SOX, sulfite oxidase, sulfite oxidase homologue, sulfite: acceptor oxidoreductase, sulfite:acceptor oxidoreductase, sulfite:oxygen oxidoreductase, sulphite oxidase cytochrome b9, SUOX, YedY, YedYZ, ZmSO

ECTree

     1 Oxidoreductases
         1.8 Acting on a sulfur group of donors
             1.8.3 With oxygen as acceptor
                1.8.3.1 sulfite oxidase

Substrates Products

Substrates Products on EC 1.8.3.1 - sulfite oxidase

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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
nitrite + ferricytochrome c
nitric oxide + ferrocytochrome c
show the reaction diagram
-
the enzyme can oxidize sulfite, and direct the electrons to reducing nitrite, to yield nitric oxide in the mitochondria
-
-
?
nitrite + H2O + porcine ferricytochrome c
nitric oxide + porcine ferrocytochrome c
show the reaction diagram
the nitrite reduction mechanism involves sulfite oxidation, sulfate release and nitrite coordination at molybdenum with protonation-dependent nitric oxide and molybdenum V release. The highest nitric oxide production occurs between 0.01 and 0.0375 mM sulfite, with a dose-dependent inhibition of nitric oxide formation at higher sulfite concentrations
-
-
?
selenite + ferricyanide + H2O
? + ferrocyanide
show the reaction diagram
-
approximately 5% of the observed sulfite activity
-
-
?
SO32- + H2O + 2 Fe(III)cytochrome c
SO42- + 2 Fe(II)cytochrome c + 2 H+
show the reaction diagram
-
-
-
-
?
SO32- + H2O + 2 ferricyanide
SO42- + 2 ferrocyanide + 2 H+
show the reaction diagram
-
-
-
-
?
SO32- + H2O + 2 ferricytochrome c
SO42- + 2 ferrocytochrome c + 2 H+
show the reaction diagram
-
-
-
-
?
SO32- + H2O + O2
SO42- + H2O2
show the reaction diagram
sodium sulfite + H2O + A
NaSO42- + AH2
show the reaction diagram
-
-
-
-
?
sulfite + cytochrome c
sulfate + reduced cytochrome c
show the reaction diagram
sulfite + ferricyanide + H+
sulfate + reduced ferricyanide
show the reaction diagram
sulfite + ferricyanide + H2O
sulfate + ferrocyanide
show the reaction diagram
sulfite + H2O + A
SO42- + AH2
show the reaction diagram
sulfite + H2O + A
sulfate + AH2
show the reaction diagram
sulfite + H2O + ferricyanide
sulfate + ferrocyanide
show the reaction diagram
-
-
-
-
ir
sulfite + H2O + O2
sulfate + hydrogen peroxide
show the reaction diagram
-
-
-
-
?
sulfite + H2O + porcine ferricyanide
sulfate + porcine ferrocyanide
show the reaction diagram
-
-
-
?
sulfite + H2O + porcine ferricytochrome c
sulfate + porcine ferrocytochrome c
show the reaction diagram
-
-
-
?
sulfite + O2 + H2O
sulfate + H2O2
show the reaction diagram
sulfite + O2 + H2O
sulfate + hydrogen peroxide
show the reaction diagram
-
-
-
-
?
additional information
?
-