[ccp4bb] Job posting-Research Fellow

*Research Fellow Position Available* We are currently conducting study on a novel estrogenic compound secreted by a Singapore phytoplankton isolate. Candidates are required to work in the following research activities: 1. Large scale batch culture of chattonella marina 2. Bioassay-guided fra

[ccp4bb] protein crystallization problem

Dear All, I have several proteins that share a common problem. When crystallization, once the precipitant is PEG, the protein will be precipitated in seconds. Even the protein concentration is just 2 mg/ml. But if the precipitant is salt such as NH2SO4. The drop is clear for months, even high