| X-RAY DIFFRACTION |
7.6 |
293.15 |
The enzyme was crystallized at 3.7 mg/ml with a final concentration of 2 mM sodium 2-oxoglutarate, 2 mM ATP and 2 mM MgCl in 25 mM Tris/HCl pH 7.6, 10% v/v glycerol, 150 mM NaCl, 2 mM dithiothreitol.
The protein was crystallized fresh without any freezing step, and crystallization was performed through the sitting drop method on a 96-Well MRC 2-Drop Crystallization Plates in polystyrene (SWISSCI, United Kingdom) under anaerobic conditions (N2:H2, gas ratio of 97:3).
The crystallization reservoir contained 90 ul of mother liquor (20 % w/v polyethylene glycol 3,350 and 200 mM sodium fluoride). The crystallization drop contained 0.6 ul protein with ligands and 0.6 ul precipitant. Crystals were soaked in the mother liquor supplemented with 20 % v/v glycerol prior to freezing in liquid nitrogen. |
