| X-RAY DIFFRACTION |
? |
285 |
A solution containing 23 mg/mL of His6-tagged SuiB in storage buffer [100 mM HEPES, pH 7.5, 300 mM KCl, 5 mM DTT, 10% (v/v) glycerol] was mixed with a stock solution of SuiA in storage buffer lacking DTT, yielding a final SuiA concentration of 1.9 mM. The resultant solution was incubated for 10 min after which it was combined 1:1 with precipitant solution to form a 4 uL drop. Crystals appeared within 2 days and were fully grown within a week. The precipitant solution was generated by combining 100 mM Bis-Tris, pH 6.0, 200 mM Li2SO4, 27% (w/v) PEG 3350 with 210 mM SAM in water to yield a final SAM concentration of 10.5 mM. |
