Mouse glutathione S-transferase GST YfYf (an orthologue of GST P or 7-7 in the rat and of GST pi in the human) was found to have a subunit Mr of 24,500 and cross-reacted with anti-(rat GST YfYf). N-Terminal analysis showed a close similarity to the rat, human and bovine orthologues. On isoelectric focusing the native enzyme had a pI of 8.3 and a pI of 7.3 in the presence of urea. Initial-rate s...