| X-RAY DIFFRACTION |
? |
293 |
Reservoir: 500 uL of 25 mM HEPES pH 7.0 with 10 mM CaCl2
Well: 2 uL of reservoir solution and 2 uL of 2.5 uM ferritin (by 24-mer) in 15 mM TRIS pH 7.4 with 150 mM NaCl
After crystals formed, a crystal was harvested and soaked in a buffered solution comprised of 25 mM HEPES pH 7.0, 30 mM CaCl2, 8.6 % (w/v) sodium acrylate, 2.5 % (w/v) acrylamide, and 0.2 % (w/v) Bis-acrylamide overnight.
Crystal was transferred to a solution containing 1 % APS and 1% TEMED with 4 M NaCl for 5 min. Crystal was then transferred to a clean slide and soaked in 30 uL H2O for 5 min. This solution was removed and the crystal was soaked in 1 M CaCl2 for 2 min. The crystal was removed, cryoprotected in perfluoro polyether, and frozen in liquid N2. |
