CRYSTALS OF ISOENZYME 3-3 OF RAT-LIVER GLUTATHIONE-S-TRANSFERASE WITH AND WITHOUT INHIBITOR

The isoenzyme 3-3 of rat liver glutathione S-transferase (GST 3-3) isolated from a baculovirus expression system has been crystallized with and without inhibitor. The crystals grown in the absence of an inhibitor belong to space group P2(1) with cell dimensions a = 119.7, b = 96.2, c = 136.7 angstrom and beta = 103.3-degrees, and diffract to 3 angstrom resolution. The crystals grown in the presence of an inhibitor belong to space group C2 with cell dimensions a = 88.3, b = 69.7, c = 81.4 angstrom and beta = 105.3-degrees, and diffract to at least 2.5 angstrom resolution. The inhibitor used is either methylmercury chloride or ethylmercury chloride; both are weak inhibitors.