| X-RAY DIFFRACTION |
? |
294 |
Crystallization trials were performed with proteins at 25 mg/ml in buffer containing 150 mM NaCl, 1 mM DTT and 25 mM Tris-HCl (pH 7.5), at 20 C with commercial screens using the sitting-drop vapour-diffusion method. Crystallization drops were set up with the aid of a Mosquito Crystal robot (TTP Labtech) using 200 nl of protein solution plus 200 nl of reservoir solution in MRC two-well crystallization microplates (Swissci) equilibrated against 75 microl of reservoir solution. Co-crystallisation trials were set up by adding 2 mM ADPr to the protein for at least 1 hour prior to setting up crystallisation drops. Crystals of the macrodomain proteins grew in 0.2 M Lithium sulphate, 0.1 M phosphate/citrate and 20% (w/v) PEG1000 |
