The isolation, characterisation and kinetics of glutathione-S-transferase from human platelets.

Glutathione S-transferase activity from human platelets was purified to homogeneity by affinity chromatography. The purified enzyme was found to be the acidic form and its molecular and catalytic properties were identical to acidic glutathione S-transferases purified from other human tissues. The purified platelet enzyme had no peroxidase activity and did not protect microsomes against peroxidation.