| X-RAY DIFFRACTION |
7.3 |
277.15 |
CDK9/Cyclin T1 at a concentration of 4.5 mg/ml (20 mM Tris / HCl, 250 mM NaCl, 1 mM DTT, 1 mM EDTA, pH 7.3) was pre-incubated with 0.6 mM (5.1-fold molar excess) of A-86 (150 mM in DMSO) and 4 mM TCEP for 1 h. 0.1 ul of the protein solution was then mixed 0.1 ul of reservoir solution (0.01 M Ca-Chloride, 0.1 M MES/NaOH, pH 6.50, 1.2 M Na-Acetate) and equilibrated at 4 C over 0.06 ml of reservoir solution. Crystals were obtained using microseeding. Well diffracting crystals appeared within 4 days and grew to full size over 8 days |
