Mitochondrial transporter required for glutathione import into mitochondria (PubMed:34707288). Glutathione, which plays key roles in oxidative metabolism, is produced exclusively in the cytosol and is imported in many organelles (PubMed:34707288). Mitochondrial glutathione is required for the activity and stability of proteins containing iron-sulfur clusters, as well as erythropoiesis (PubMed:34707288). Expressed in many tissues (PubMed:11139402). Abundant in testis and kidney (PubMed:11139402). Belongs to the mitochondrial carrier (TC 2.A.29) family. Truncated N-terminus.