| X-RAY DIFFRACTION |
6.5 |
293.15 |
Protein was stored at -80C, then thawed in a water bath at 25C for ~ 20 minutes. The protein, at a concentration of 9.5 mg/mL was diluted to 5.5 mg/mL using 30 mM Tris pH 7.4, 116 mM KCl, 15% glycerol. The diluted protein was left at 4C for ~ hours, then at room temperature for ~ 20 minutes prior to preparation of the crystallization tray. The 2 uL hanging drop (containing 1:1 protein:reservoir) hung over a reservoir solution containing 140 mM Na-acetate, 70 mM Na-citrate, 100 mM Na-cacodylate (pH 6.5), and 31.5% PEG 1,000 (Hampton Research). |
