Re: [ccp4bb] smeared spot in diffraction

2010-01-22 Thread Fengxia Liu
Hi all, yesterday i have tried annealing, no significant improvement. Thank you so much for all those suggestions. Summary: 1. check diffraction on RT. 2. dehydrate crystal, many methods 3. try annealing 4. grow crystal in presence of cryo 5. try smaller crystal, sometimes small crystal is bette

[ccp4bb] cracking crystal

2009-09-01 Thread Fengxia Liu
Dear All, Could you please help me solve this problem? I have a sensitive crystal, the mother liquor is 10% PEG4k+ 100 mM Tris-buffer pH 8.5, crystal is big and good but very sensitive, when i put it in cryoprotectants, cracking happened. First i used artificial mother liquor + 25% v/v glycerol,