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Information on EC - superoxide oxidase

for references in articles please use BRENDA:EC1.10.3.17
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EC Tree
IUBMB Comments
This membrane-bound, di-heme containing enzyme, identified in the bacterium Escherichia coli, is responsible for the detoxification of superoxide in the periplasm. In vivo the reaction proceeds in the opposite direction of that shown and produces oxygen. Superoxide production was only observed when the enzyme was incubated in vitro with an excess of ubiquinol.
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Word Map
  • photosystem
  • thylakoids
  • photoinhibition
  • qa
  • manganese-containing
  • low-potential
  • oxygen-evolving
  • pheophytins
  • high-potential
  • photoreduction
  • chlorophyll-binding
  • plastoquinol
  • mn-depleted
  • thermoluminescence
  • thermosynechococcus
  • o2-evolving
  • psii-enriched
  • psbo
  • 3-3,4-dichlorophenyl-1,1-dimethylurea
  • photoinhibitory
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Reaction Schemes
copper- and zinc-containing superoxide dismutase, Cu,Zn-SOD, Cyb, cybB, cyt b559, Cyt b561, cytochrome b559, cytochrome b561, O2- :Fe(III) oxidoreductase, SOO, more
2 O2 + ubiquinol = 2 superoxide + ubiquinone + 2 H+
show the reaction diagram
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