Re: [ccp4bb] Substitution to glycerol during crystallogenesis

2012-04-03 Thread Enrico Stura
Glycerol is known to be able to reduce nucleation. This might be countered by an increase in protein concentration. Vera, L., Czarny, B., Georgiadis, D., Dive, V., Stura, E.A. (2011) Practical Use of Glycerol in Protein Crystallization. Cryst. Growth Des. 11: 2755–2762. Enrico. On Tue, 03

Re: [ccp4bb] Substitution to glycerol during crystallogenesis

2012-04-03 Thread Edward A. Berry
Florian Schmitzberger wrote: Dear Toby, I don't think there is a basic problem using glycerol in crystallization. Glycerol will affect the vapour pressure (if it is not present in the well/precipitant solution) and 10 % glycerol is ~ 1.3 molar concentration. During equilibration the drops may

[ccp4bb] Substitution to glycerol during crystallogenesis

2012-04-03 Thread Toby Longwood
Dear all, My question is related to a sample preparation. I’m working with a complex that can be stabilized with glycerol (at least 10%) during purification. The use of detergents does not help. After purification, the sample is homogeneous (EM) and can be concentrated (3-4mg.mL-1) . I already

Re: [ccp4bb] Substitution to glycerol during crystallogenesis

2012-04-03 Thread Florian Schmitzberger
Dear Toby, I don't think there is a basic problem using glycerol in crystallization. Glycerol will affect the vapour pressure (if it is not present in the well/precipitant solution) and 10 % glycerol is ~ 1.3 molar concentration. During equilibration the drops may increase in volume,

Re: [ccp4bb] Substitution to glycerol during crystallogenesis

2012-04-03 Thread Debasish Chattopadhyay
: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Florian Schmitzberger Sent: Tuesday, April 03, 2012 11:07 AM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] Substitution to glycerol during crystallogenesis Dear Toby, I don't think there is a basic problem using glycerol