| X-RAY DIFFRACTION |
6.0 |
294 |
Equal volumes of protein (10-20 mg/mL in 30 mM Tris-HCl, pH 8.0, 0.1 mM EDTA with trace PMSF) and precipitant solution (15-20% (w/v) PEG 6000 and 0.1 M sodium citrate pH 6.0) were used to make the sitting drop. The data collection crystal was transferred to a cryo-amenable soak solution containing 24% PEG 6000, 24% glycerol, 0.1 M HEPES pH 7.0, 10 mM CoCl2, and 1.25 mM DCSA for 24 hours prior to being plunge-cooled in liquid nitrogen for data collection. VAPOR DIFFUSION, SITTING DROP, temperature 294K |
