[ccp4bb] Postdoc position on Hsp90 Structural Biology

2015-05-05 Thread Laurence Pearl
Postdoctoral Research Fellow in Structural Biology of Hsp90 complexes (Fixed term) Ref 143 http://www.sussex.ac.uk/aboutus/jobs/143 School of Life Sciences - Genome Damage and Stability Centre Fixed term for 3 years, full time. Salary range: starting at £31,342 and rising to £37,394 per

[ccp4bb] oxford cobra vs oxford 800

2015-05-05 Thread Linda Olson
Dear All, Sorry for the off topic question but I would like to hear from this group experiences they have with sample cooling systems for x-ray data collection. We have had a x-stream from Rigaku since ~1999 and have been very happy with it. Unfortunately it is now obsolete since we can not

[ccp4bb] Off topic - Mercury Lamp for Akta

2015-05-05 Thread Bonsor, Daniel
The mercury lamp (28-4042-25) offered by GE Healthcare for Akta systems come with the housing and is priced at $1345. We have plenty of sparing housing units and are interested in just the lamp. Does anyone here have any cheaper alternatives/suggestions than buying the lamp and housing? Thanks

Re: [ccp4bb] Off topic - Mercury Lamp for Akta

2015-05-05 Thread Roger Rowlett
I wouldn't mind knowing how to source this lamp as well. But FYI, the lamps are usable for years after the FPLC gives you the dire low intensity warning. We just ignore it until the lamp goes completely dark or it's impossible to measure normal absorbances. We've used the current lamp for

Re: [ccp4bb] Off topic - Mercury Lamp for Akta

2015-05-05 Thread Artem Evdokimov
I am not sure if you have anyone electronically-minded at your disposal, however there are now LEDs available at 260 and 280nm peak wavelengths. They cost ~$40-$120 each (my data are at least 6 months old so I am not sure if they still cost the same) and they should, with a little fiddling, be

Re: [ccp4bb] cryo condition

2015-05-05 Thread Matthew Bowler
Along with all the excellent suggestions so far you can also try no cryoprotectant at all: If you harvest your crystal on a mesh loop and remove all the mother liquor the crystal lattice itself will act as a cryoprotectant as long as the solvent channels are smaller than 40A in diameter (they

Re: [ccp4bb] Tev cleavage

2015-05-05 Thread Hargreaves, David
You could try adding TEV to your protein just prior to crystallisation. I produced 2 equivalent structures this way; one with the tag clearly visible packing between molecules in an I centred space group and a 2nd (with TEV added) in P21 where the tag was no longer visible (the packing

Re: [ccp4bb] Question for those who use AutoSharp via CCP4i on MacOSX Yosemite

2015-05-05 Thread Finke Aaron (PSI)
I’ll add to this that you should also set the relevant path in launchd.conf as well to access other external programs (SHELXC/D/E) when opening ccp4i via the Finder/Spotlight. setenv PATH /where/ever/shelx Cheers, Aaron -- Dr. Aaron Finke Postdoctoral

Re: [ccp4bb] Cryo protection

2015-05-05 Thread Faisal Tarique
Cryo On 5 May 2015 13:51, faisaltari...@gmail.com wrote: Thank you everyone..I have got some hints from this discussion and will definitely try some of them to check its efficacy for my case...Thanx again for your valuable suggestions.. On 5 May 2015 13:48, Anthony Savill

Re: [ccp4bb] Question for those who use AutoSharp via CCP4i on MacOSX Yosemite

2015-05-05 Thread Finke Aaron (PSI)
Dear Mark, Indeed there is a way. You have to set the environment variable so that all Mac apps can access it. This is most easily done via launchd. In the Terminal, type ‘sudo vi /etc/launchd.conf’ and add the following text (the file will likely be blank): setenv SHARP_home

[ccp4bb] Formulatrix NT8

2015-05-05 Thread Derek Logan
Hi, I would like to come into contact with users of the Formulatrix NT8, especially if they have the LCP option. If you have one, please contact me off-list. Best regards Derek Derek Logan

Re: [ccp4bb] cryo condition

2015-05-05 Thread Clemens Grimm
Hi Faisal, Did you try to simply raise the Sokalan CP7 percentage? Additives like Glycerol can increase the solubility of proteins, in that case you have to counteract by increasing also the precipitant concentration. If your crystals crack, a likely reason is osmotic shock. Particularly