Tags: Enzyme.
Sulfite oxidase (EC 1.8.3.1) is an enzyme in the mitochondria of all eukaryotes. It oxidizes sulfite to sulfate and via cytochrome c transfers the electrons produced to the electron transport chain allowing generation of ATP in oxidative phosphorylation. This is the last step in the metabolism of sulfur-containing compounds and the sulfate is excreted. Sulfite oxidase is a metallo-enzyme that utilizes a molybdopterin cofactor and a heme group.
