2.1.1.257 | purified recombinant wild-type and selenmethionine-labeled DUF358/Mj1640 in complex with S-adenosyl-L-methionine, at 20°C, mixing of 0.001 ml of protein solution with 0.001 l of reservoir containing 20% PEG 3350, 25 mM NH4F, 20 mM MgCl2, 100 mM Tris, pH 7.5, X-ray diffraction structure determination and analysis at 1.4 A resolution |