| X-RAY DIFFRACTION |
? |
293 |
A 2ul drop with 3 mg/ml S250A PCK, 5 mM Manganese chloride, 5mM Magnesium chloride, 2 mM ATP, 2mM Pyruvate, 1 mM EDTA, 200 mM Ammonium acetate, 100 mM Sodium acetate pH 4.8, 0.01 mM DTT, 12% PEG 4000 was added to 2 ul drop containing 0.01 mM Nickel chloride, 0.1 M Tris pH 8.5, 20% PEG 2000. After a week a rod like crystal was removed and soaked in a solution with 30% glycerol 1mM EDTA, 100 mM sodium acetate 200mM ammonium acetate and 12% PEG 4000 for 10 seconds and flash cooled in liquid notrogen |