Biochem/physiol Actions An organo-selenium compound possessing antioxidant properties. Inhibits mammalian lipoxygenases in the absence of thiol groups, and glutathione S-transferase and papain via the interaction with cysteine residues. Also inhibits indoleamine 2,3-dioxygenase by covalently modifying a cysteine residue, the effect being reversible with dithiothreitol.1 Inhibits oxidation of low density lipoproteins (LDL). |