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Sulfur dioxygenase

Sulfur dioxygenase (, sulfur oxygenase, sulfur:oxygen oxidoreductase) is an enzyme with systematic name S-sulfanylglutathione:oxygen oxidoreductase. This enzyme catalyses the following chemical reaction

sulfur + O<sub>2</sub> + H<sub>2</sub>O sulfite + 2 H<sup>+</sup> (overall reaction)
(1a) glutathione + sulfur S-sulfanylglutathione (spontaneous reaction)
(1b) S-sulfanylglutathione + O<sub>2</sub> + H<sub>2</sub>O glutathione + sulfite + 2 H<sup>+</sup>

This enzyme contains iron.

In humans, sulfur dioxygenase is needed to detoxify sulfide.

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