[ccp4bb] Cauliflower looking crystals

2013-05-06 Thread Browning Christopher
Hi Everybody, I was wondering if anybody had a similar case to mine. The protein I'm working on is a tough one. Its around 75 KDa in size, and it purifies well, but soon after the full length protein starts to autolyse. Consequently, I don't get any hits after setting up the screens. To get

Re: [ccp4bb] Cauliflower looking crystals

2013-05-06 Thread Evgeny Osipov
Hi, Chris, My coworkers have the same problem with the ubiquitin-like protein. Sadly, they still can't overcome this issue. First, about autolysation: do your protein contain an any metal ions? May be you should add EDTA to the protein buffer. Are you sure about protein homogeneity? Is it

Re: [ccp4bb] Cauliflower looking crystals

2013-05-06 Thread David Schuller
I haven't seen cauliflower but I have seen brussel sprouts. Condtions (esp. pH) were changing over the course of crystallization, and the stalks and sprouts were different crystal forms. On 05/06/13 06:17, Browning Christopher wrote: Hi Everybody, I was wondering if anybody had a similar