X-RAY DIFFRACTION |
8.5 |
294 |
Crystallization was performed in an anaerobic chamber (95% N2/5% H2) with anoxic solution. The best-diffracting crystals were obtained using the sitting drop method in a crystallization plate (96-well 2-drop MRC Crystallization Plates in polystyrene, Molecular Dimensions, Suffolk, UK); the crystallization reservoir contained 100 mM Tris/HCl, pH 8.5, 30% (w/v) polyethylene glycol 4000, and 200 mM Na acetate trihydrate. Crystallization drop contained 1 ul HdrABC-MvhAGD at 25 mg/ml premixed with 2 mM FAD and 1 ul of precipitant. The crystals appear after 1-2 weeks and are cryoprotected in the crystallization solution supplemented with 30% glycerol. |