| X-RAY DIFFRACTION |
7.5 |
293.15 |
The construct used for crystallization was that of the wild type protein with the mutation R13N. Crystals of CK1d in complex with A-86 were obtained using hanging drop vapour diffusion set-ups. CK1d at a concentration of 13.6 mg/ml (50 mM HEPES, 266 mM NaCl, 1 mM EDTA, 1 mM DTT, 5 mM B-OG, pH 7.5) was pre-incubated with 2 mM (5.1-fold molar excess) of A-86 (150 mM in DMSO) for 1 h. 1 ul of the protein solution was then mixed with 1 ul of reservoir solution (0.1 M Na3-Citrate, pH 4.9, 18 %(w/v) PEG 3350) and equilibrated at 20 C over 0.4 ml of reservoir solution. Well diffracting crystals appeared over night |
