Re: [ccp4bb] Applications of FELs in structural biology: Positions for Postdocs and PhD students

2014-10-08 Thread rsweet
Dear Ilme, I am actually in your time zone -- Amst. NL. Wish I were qualified. I'll send this to Marie. Love Bob On Oct 8, 2014, at 9:12 PM, Ilme Schlichting wrote: > The Project: > X-ray free-electron lasers (XFELs) are poised to revolutionize structural > biology. They provide highly int

[ccp4bb] Applications of FELs in structural biology: Positions for Postdocs and PhD students

2014-10-08 Thread Ilme Schlichting
The Project: X-ray free-electron lasers (XFELs) are poised to revolutionize structural biology. They provide highly intense, coherent, femtosecond X-ray pulses that promise novel approaches to structure determination of biological objects. We are at the forefront of this development, designing

Re: [ccp4bb] How to separate BSA present in Thrombin

2014-10-08 Thread Pedro Pereira
Dear Manjula Ramu, You might want to consider immobilizing your thrombin-containing mixture on a matrix (e.g. Bio-Rad's Affi-Gel, but there are many alternatives) and then use the slurry for cleaving your recombinant protein. That way, you never contaminate your sample with either thrombin or B

Re: [ccp4bb] How to separate BSA present in Thrombin

2014-10-08 Thread FOOS Nicolas
Hi Manjalu, In my opinion, one way is to use iEX column. Depending of the Pi of you protein and the one of the BSA, if they are sufficiently different, Ion exchange is on possible way. To separate your protein from BSA, you have to give us more information about your protein if it's possible.

Re: [ccp4bb] How to separate BSA present in Thrombin

2014-10-08 Thread Tim Gruene
Dear Manjula, Unless Thrombin requires BSA for functioning (I never used Thrombin) you could run a size exclusion column with the Thrombin solution prior to using it. Or you could by it from a different vendor. Regards, Tim On 10/08/2014 03:27 PM, Manjula Ramu wrote: > Hi all, > > My protein si

[ccp4bb] How to separate BSA present in Thrombin

2014-10-08 Thread Manjula Ramu
Hi all, My protein size is nearly the same size of BSA and it has His tag. If I have to cleave the tag I have to use Thrombin which is having huge amount of BSA in it. Now how will I separate this BSA from my protein. Thanks and Regards, Manjula R Research Scholar Department of Biophysics Nationa

Re: [ccp4bb] Yeast membrane protein extraction

2014-10-08 Thread Bert Van-Den-Berg
Hi, I would stay away from the Mem-PER kit since the detergents in there are possibly quite harsh (?). I doubt that detergents would cause lysis of yeast cell walls in any case. There is a budget-friendly alternative for mechanical breaking of yeast and that is the bead beater, sold by biospec.

[ccp4bb] Yeast membrane protein extraction

2014-10-08 Thread Theresa Hsu
Dear all Would you have a good protocol for membrane protein extract from S. cerevisiae? We don't have French press in our lab. Is the Pierce Mem-PER reagent kit useful for proteins (10-12 transmembrane helices) that will be use for crystallization? Thank you. Theresa

[ccp4bb] Research Associate / Assistant at the MRC Laboratory of Molecular Biology, Cambridge.

2014-10-08 Thread Murray Stewart
Research Associate/Assistant with Murray Stewart at the MRC Laboratory of Molecular Biology, Cambridge, UK. It is anticipated that a Research Associate/Assistant position will soon become available in Murray Stewart's group at the MRC Laboratory of Molecular Biology in Cambridge to work on the