[ccp4bb] cryoprotectant for crystals in isopropanol

2008-03-19 Thread shivesh kumar
Dear all, The question is regarding the cryoprotectant.We have crystallized a protein in 20% PEG 500 with 10% isopropanol.What should be the cryo we should try for data collection.Also,what percentage of PEG 500 is sufficient enough as a cryo for data collection. We are also trying to crystallize

Re: [ccp4bb] cryoprotectant for crystals in isopropanol

2008-03-19 Thread David Roberts
Not that all proteins are created alike, but we had a protein crystallize in a similar situation (PEG/20%IPA). I don't remember the exact details, but we did have good luck using just glycerol as a cryoprotectant. That is, I made up the well buffer and added to that well buffer 20-25%

Re: [ccp4bb] cryoprotectant for crystals in isopropanol

2008-03-19 Thread Radisky, Evette S., Ph.D.
(lab) From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On Behalf Of shivesh kumar Sent: Wednesday, March 19, 2008 3:34 AM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] cryoprotectant for crystals in isopropanol Dear all, The question is regarding