Re: [ccp4bb] Crystal Optimization

2012-07-10 Thread yybbll
Hi, In my experience, it is very very very difficult to optimize this needle like crystal. Always give up. Good luck! Dear All; Could somebody give a nice suggestion how the following type crystal could be optimized, I almost tried everything. Crystal Image is attached Crystal condition: 20%

Re: [ccp4bb] detergent crystal?

2012-04-26 Thread yybbll
Hi, For me it is detergent crystals or other stuff that is not quite important in this case. As you showed the resolution is quite low. I suggest you need to repeat again again again. You may go to PEG200. In our case, it is very difficult to reproduce membrane protein crystals. Good luck!

Re: [ccp4bb] DDM

2012-03-26 Thread yybbll
Hi, I used 0.017% or 0.012%. My protein is very stable at this concentration. Good luck. Lin 2012-03-26 yybbll Hi All, Has anyone had any luck purifying membrane proteins with DDM (n-dodecyl-D-maltoside) using concentration of detergent ~1-2 x CMC ? (Its CMC is very low: 0.009

Re: [ccp4bb] optimization of dumbbell like crystal

2011-02-21 Thread yybbll
Additives screening. YB 2011-02-21 yybbll 发件人: Bosch, Juergen 发送时间: 2011-02-21 03:46:12 收件人: CCP4BB 抄送: 主题: Re: [ccp4bb] optimization of dumbbell like crystal Seeding ? changing from sitting to hanging drop or under oil ? play with temperature ? Jürgen On Feb 20, 2011, at 9

Re: [ccp4bb] how to optimize small rod-shaped crystals

2010-11-18 Thread yybbll
Hi, thank you for you reply. Could you tell me if you try to dye membrane protein crystal with detergent? Thanks. Y.B. 2010-11-18 yybbll 发件人: Matthew Bratkowski 发送时间: 2010-11-17 02:58:40 收件人: CCP4BB 抄送: 主题: Re: [ccp4bb] how to optimize small rod-shaped crystals I like using

[ccp4bb] How to detect the concentration of detergent?

2010-10-04 Thread yybbll
t the concentration of detergent? And how to dilute detergent? Thanks all. Y.B. Lin 2010-10-04 yybbll

Re: [ccp4bb] turn granular to crystal

2010-08-26 Thread yybbll
Hi, A little danger this condition. I suggest you should firstly make sure they are protein crystals. I know it is very difficult. I suggest you can add proteases to the drops. If "crystals" dissolve, no problem, they are protein crystals. Best Yibin 2010-08-27 yybbll 发件人:

Re: [ccp4bb] turn granular to crystal

2010-08-25 Thread yybbll
Hi, Did you use detergent? It seems look like detergent crystals. 2010-08-25 yybbll 发件人: rui 发送时间: 2010-08-25 20:37:18 收件人: CCP4BB 抄送: 主题: [ccp4bb] turn granular to crystal Hi, All, I'm trying to crystallize a soluble protein and got something like granular, they are ro

Re: [ccp4bb] please recommend a crystallization incubator

2010-05-29 Thread yybbll
In fact, you can put plates in refrigerator. It is cheap and simple. Maybe the temperature is not stable, but don't warry, acturaly, the dynamic temperature is benifit to grow crystals. You can look for relational papers. Of course, you can buy a incubator, which can control temperature from 4-6