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 + O2 + H2O $$\rightleftharpoons$$ sulfite + 2 H+ (overall reaction)
 * (1a) glutathione + sulfur $$\rightleftharpoons$$ S-sulfanylglutathione (spontaneous reaction)
 * (1b) S-sulfanylglutathione + O2 + H2O $$\rightleftharpoons$$ glutathione + sulfite + 2 H+

This enzyme contains iron.

In humans, sulfur dioxygenase is needed to detoxify sulfide.