Re: [ccp4bb] Control the crystallization process in the presence of small volatile organic molecules

2014-01-27 Thread Chao Quan
Hi Chen, I had a similar condition before (reservoir solution with 10% dioxane) and an oil-based cryoprotectant (66.5% w/w paraton-N, 28.5% paraffin oil and 5% glycerol) worked for me. Please check this paper out: http://scripts.iucr.org/cgi-bin/paper?wd5052 In addition, have you tried cryoprot

Re: [ccp4bb] Control the crystallization process in the presence of small volatile organic molecules

2014-01-24 Thread Diana Tomchick
igher viscosity you may not have to "chase your crystals" through the drop. Hope this helps a little. Mark -Original Message- From: Chen Zhao mailto:c.z...@yale.edu>> To: CCP4BB mailto:CCP4BB@JISCMAIL.AC.UK>> Sent: Wed, Jan 22, 2014 11:00 pm Subject: [ccp4bb]

Re: [ccp4bb] Control the crystallization process in the presence of small volatile organic molecules

2014-01-24 Thread Chen Zhao
ion of the dioxane will still be an issue, but with a > higher viscosity you may not have to "chase your crystals" through the > drop. > > Hope this helps a little. > > Mark > > > > -Original Message----- > From: Chen Zhao > To: CCP4BB > Sent:

Re: [ccp4bb] Control the crystallization process in the presence of small volatile organic molecules

2014-01-24 Thread Mark van der Woerd
ssage- From: Chen Zhao To: CCP4BB Sent: Wed, Jan 22, 2014 11:00 pm Subject: [ccp4bb] Control the crystallization process in the presence of small volatile organic molecules Dear all, I am now optimizing a hit which contains about 30% 1,4-dioxane using hanging-drop vapor diffusion at 25 degr

[ccp4bb] Control the crystallization process in the presence of small volatile organic molecules

2014-01-22 Thread Chen Zhao
Dear all, I am now optimizing a hit which contains about 30% 1,4-dioxane using hanging-drop vapor diffusion at 25 degree. I am having a hard time to reproduce the results: most of the times the drops are either dry in one day or full of precipitate, and only occasionally could I get small crystals