TABLE 4.

Glutathione peroxidase activities and GST of purified rGstB protein

We prepared rGstB and determined enzyme activity as described under “Experimental Procedures.” Assays included 1 mm GSH and 15 μg of rGstB. Data are the means of three experiments ± S.D.

Substrate	Specific activity
	nmol min−1 mg protein−1
1-Chloro-2,4-dinitrobenzene	7.6 ± 1.0
1,2-Dichloro-4-nitrobenzene	<0.5
Ethacrynic acid	<0.5
Cumene hydroperoxide	90 ± 18