Re: [ccp4bb] Crystallization problem

2015-01-28 Thread Monica Mittal
Hi everyone, Many Thanks for your suggestions !! I checked for the everything related to the components i am using : No contamination, not very old, no PEGs etc. And then i followed the way Markov and Prem suggested !! For a trial set up i just et up 10 different concentration variations of my pre

Re: [ccp4bb] Crystallization problem

2015-01-26 Thread Emilia C. Arturo (Emily)
> > On Mon, Jan 26, 2015 at 8:22 PM, Monica Mittal > wrote: > >> Hi everyone, >> >> I need an advice on some strange thing happening to one of the protein i >> am working on. I used to purify it and set up trays and get some needle >> shaped crystals and trying seeding and other methods to optimis

Re: [ccp4bb] Crystallization problem

2015-01-26 Thread Prem Prakash
Hi, It happened with me also, thought I had not the needles but the crystals. Temperature matters a lot in these situations, leave the trays unattended for long and also try with various concentration. Make it highest say 15 mg/ml and dilute serially to set with a range of concentrations. Sometime

[ccp4bb] Crystallization problem

2015-01-26 Thread Monica Mittal
Hi everyone, I need an advice on some strange thing happening to one of the protein i am working on. I used to purify it and set up trays and get some needle shaped crystals and trying seeding and other methods to optimise them. But recently, it stopped giving crystals even small needles. I am sti