Akademik

A salt of sulfurous acid; elevated in cases of molybdenum cofactor deficiency.

- s. dehydrogenase an oxidoreductase catalyzing the reaction of s. with 2ferricytochrome c and water to sulfate and 2ferrocytochrome c.

- s. oxidase a liver oxidoreductase (hemoprotein) catalyzing the reaction of inorganic s. ion with O₂ and water to produce sulfate ion and H₂O₂; a lower activity of this enzyme is observed in cases of molybdenum cofactor deficiency.

- s. reductase oxidoreductase catalyzing reduction of s. to H₂S using some reduced acceptor.

sul·fite or chiefly Brit sul·phite 'səl-.fit n a salt or ester of sulfurous acid