Hi Rui,
I would try the additive screen.
http://hamptonresearch.com/product_detail.aspx?cid=1&sid=36&pid=27
Best Regards,
Georg
rui schrieb:
> Hi, All,
>
> I'm trying to crystallize a soluble protein and got something like
> granular, they are rounded shaped and not so regular and also don't
> have sharp edges. See the attached pic. The current condition is
> PEG4000 and pH around 5. How can I improve this condition? Thanks a lot.
>
>
--
Universität Tübingen
Interfakultäres Institut für Biochemie
Dr. Georg Zocher
Hoppe-Seyler-Str. 4
72076 Tuebingen
Germany
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http://www.ifib.uni-tuebingen.de
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