| X-RAY DIFFRACTION |
7.5 |
293.15 |
The enzyme used for crystallization was at a concentration of 16 mg/ml in 25 mM Tris/HCl pH 7.6, 10 % (v/v) glycerol, 2 mM FAD and 2 mM dithiothreitol. Crystals were obtained anaerobically in a Coy tent filled with a N2/H2 (97:3%) atmosphere by initial screening at 20 degrees Celsius using the sitting drop method on 96-well MCR two-drop crystallization plates in polystyrene (SWISSCI). The reservoir contained 90 ul of crystallization solution. The crystallization solution contained 45 % (w/v) Pentaerythritol ethoxylate (3/4 EO/OH) 270, 100 mM HEPES pH 7.5, and 200 mM (NH4)2SO4. Drops of 0.7 ul protein and 0.7 ul crystallization solution were spotted. |