Catalyzes the reduction of hydroperoxides in a glutathione-dependent manner thus regulating cellular redox homeostasis. Can reduce small soluble hydroperoxides such as H2O2, cumene hydroperoxide and tert-butyl hydroperoxide, as well as several fatty acid-derived hydroperoxides. Cannot reduce phosphatidycholine hydroperoxide.
Subcellular locations: Cytoplasm, Cytosol
Exclusively expressed in the stomach and small intestine.