Induction of anionic glutathione transferases in rat liver by propylthiouracil

The treatment of rats with propylthiouracil (PTU) resulted in an induction of not only cationic but also anionic glutathione (GSH) transferases. DE-52 column chromatography of the anionic GSH transferases divided into five main peaks (I-V). Peaks I-IV had a high activity toward 1-chloro-2,4-dinitrobenzene (CDNB). Peak V, which is a new form of the enzyme, showed high activity to ethacrynic acid. PTU induced peaks I and V, whereas phenobarbital increased the activity of only peak I.