Table 2.
Isoform | CDNB | DCNB | ECA | CuOOH | 2-HEDS | Methyl parathion* |
---|---|---|---|---|---|---|
GST rho | 29,700 | 41 | 71 | 8 | 56 | 2.4 |
GST pi | 1,236 | 6 | 124 | BDL | BDL | <0.2 nmol/hr/mg |
GST omega | 71 | 1 | 12 | BDL | 61 | <0.2 nmol/hr/mg |
Key: 1-chloro-2,4-dinitrobenzene(CDNB), 1,2-dichloronitrobenzene (DCNB), ethacrynic acid (ECA), cumene hydroperoxide (CuOOH), and 2-diethylhexyl sulfide (2-HEDS). Units for GST enzymatic activities toward CDNB, DCNB, and ECA are nmol substrate conjugated/min/mg protein; GST-2-HEDS activity units are nmol 2-HEDS reduced/min/mg; GST-CuOOH units are nmol CuOOH reduced/min/mg: GST-methyl parathion units are nmol methyl parathion demethylated/hr/mg.
Data reported was obtained from three replicate analyses of enzymatic activities and displayed ≤10% variation.