2.7.1.113 | purified recombinant enzyme, hanging drop vapour diffusion method, enzyme solution containing 7 mg/ml protein, 5 mM MgCl2, and 5 mM ATP, mixed with an equal volume of cyrstallization solution containing 0.1 M Na-citrate, pH 6.5, 0.2 M ammonium acetate, and 30% w/v PEG 4000, X-ray diffraction structure determination and analysis at 2.8 A resolution, molecular replacement method |