| X-RAY DIFFRACTION |
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293.15 |
1 microliter protein stock solution (8 mg/ml CK2alpha, 2 mM Heparin dodecasaccharide, 285.7 mM NaCl, 15 mM Tris, pH 8.5) was mixed with 2.5 microliter reservoir solution (32 %(w/v) PEG4000, 0.2 M malonate, 0.1 M Tris, pH 7.5). The resulting drop was equilibrated against 800 microliter reservoir solution. After equilibration the crystallization process was initialized by addition of 150 nanoliter micro seeding suspension. CK2alpha/heparin crystals grown in this way were prepared for cryo diffractometry by soaking them into a cryo solution consisting of 32 % (w/v) PEG4000, 0.2 M NaCl, 0.5 mM Heparin dodecasaccharide. |
