2.1.1.290 | apoenzyme and enzyme bound to S-adenosyl-L-methionine or S-adenosyl-L-homocysteine, sitting drop vapor diffusion method, using 200 mM ammonium citrate (pH 7.0), 10 mM HEPES (pH 7.5), 20% (w/v) PEG3,350, 20 mM sodium citrate, and 1% (v/v) 2-propanol or microseeding method using 200 mM ammonium citrate (pH 7.0) and 20% (w/v) PEG3350 |