1.1.1.82 | purified refolded reconbinant enzyme, sitting drop vapor diffusion method, 0.002 ml of protein solution containing 8.9 mg/ml protein in 50 mM Tris-HCl, pH7.5, containing 0.2 M NaCl, are mixed with an equal volume of the reservoir solution, comprised of 0.1 M CHES, pH 9.5, and 40% PEG 600, and equilibrated against 0.15 ml of reservoir solution at 20°C, 2 weeks, X-ray diffraction structure determination and analysis at 2.9 A resolution and room temperature |