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:

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
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: rui 发送时间

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 rounded