| X-RAY DIFFRACTION |
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293 |
RNA was exchanged and concentrated into 10 mM HEPES-KOH, pH 7.5, 2.5 mM magnesium chloride. After concentration to 7.5 mg/mL (~330 uM), RNA was diluted to 4 mg/mL, 100 mM spermidine was added to a final concentration of 0.5 mM. 0.5 uL RNA was added to 2 uL crystallization solution (50 mM sodium cacodylate, pH 6.0, 150 mM sodium chloride, 4 mM calcium chloride, 0.6 mM spermine, 36% 1,6-hexanediol) and crystallized via hanging drop vapor diffusion over 1 mL crystallization solution. Crystals formed within 24 hours at 20 degrees C and were harvested after 36 hours. |
