Subcellular distribution of N-ethylmaleimide-stimulatable glutathione S-transferase activity in rat liver. Evidence of localization of glutathione S-transferase in peroxisomal membrane

Subcellular distribution of glutathione S-transferase activity was investigated as stimulated form by N-ethylmaleimide in rat liver. The stimulated glutathione S-transferase activity was localized in mitochondrial and lysosomal fractions besides microsomes. Among N-ethylmaleimide-treated submitochondrial fractions, glutathione S-transferase activity was stimulated only in outer mitochondrial membrane fraction. In lysosomal fraction, it was suggested that glutathione S-transferase activity in peroxisomes, which is immunochemically related to microsomal transferase, was also stimulated, but not in lysosomes.