| X-RAY DIFFRACTION |
6.0 |
293 |
The crystals of pIRE1a with Mg2+-ADP were grown by mixing 2 ul protein solution (10 mg/ml pIRE1a (547-977) in 50 mM Hepes, pH 7.5, 200 mM NaCl, 5 mM DTT, 1 mM EDTA, 1 mM ADP (100mM ADP stock was ~ pH 7.0), 1 mM MgCl2) with 2 ul reservoir solution (16 % PEG 3350, 200 mM Na+ Malonate pH 6.0) in sitting drops at room temperature. Seeding was used to initiate crystal growth. Crystals appeared the next day and grew to full size in 3 weeks. For data collection, the crystals were frozen in a solution of 20% ethylene glycol, 22% PEG 3350, 200 mM Na+ Malonate pH 6.0 and added to the protein drop before mounting the crystals on the loop. |
