X-RAY DIFFRACTION |
8.5 |
294 |
All crystallization was performed in an anaerobic chamber (95% N2/5% H2) with anoxic solution using the sitting drop method (96-well 2-drop MRC Crystallization Plates in polystyrene, Molecular Dimensions, Suffolk, UK). The crystallization reservoir contained 100 mM Tris/HCl, pH 8.5, 3% (v/v) DMSO, 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 appeared after 1-2 weeks in this condition. The cryo-cool trapping experiment was performed as following: crystals were soaked for 3min30sec in the crystallization solution supplemented with 66 mM CoM-S-S-CoB. The crystal was cryo-protected by a soak in the crystallization solution supplemented by 30% glycerol and 10 mM CoM-S-S-CoB. |