| X-RAY DIFFRACTION |
5.0 |
293.15 |
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 enzyme was crystallized at 3.4 mg/ml with a final concentration of 2 mM 2-oxoglutarate and 2 mM MgCl in 25 mM Tris/HCl pH 7.6, 10% v/v glycerol, 150 mM NaCl, and 2 mM dithiothreitol. The crystallization reservoir contained 90 ul of mother liquor (25 % w/v Polyethylene glycol 1,500 and 100 mM SPG (succinic acid, sodium dihydrogen phosphate, and glycine) buffer pH 5.0), and the crystallization drop contained 0.6 ul protein with ligands and 0.6 ul precipitant. Crystals were soaked in the mother liquor supplemented with 15 % v/v glycerol prior to freezing in liquid nitrogen. |
