Re: [ccp4bb] CCP4 / Ubuntu 9.04 64-bit

2009-08-04 Thread Stephen Weeks
Sankar, All the executables you downloaded (including bltwish) from the CCP4 site are compiled on a 32bit machine. You just need to install the 32bit shared library package via synaptic. The following terminal command should do. sudo apt-get ia32-libs As for coot for what platform is your v

Re: [ccp4bb] Twinning

2009-08-04 Thread Eleanor Dodson
Try refinement with the newest REFMAC which will take twinning into account. But if your integration has missed some spots, or the spots were streaky you may have more complex problems - with what is termed Order-disorder in the lattice. eleanor Rana Refaey wrote: Hi all, I have a few

Re: [ccp4bb] resolution shells for each bin in scala?

2009-08-04 Thread Eleanor Dodson
Cant you read the shell limits off the loggraphs? The numbers in the tables are given as 4sin**2/Lamba**2 I think but that is converted to As in the loggraph. Is that what you mean though? Eleanor Francis E Reyes wrote: Hello ccp4'ers Where is / how can I obtain the resolution shell for each

Re: [ccp4bb] resolution shells for each bin in scala?

2009-08-04 Thread Phil Evans
The table has 1/d^2 and Dmin for the outer edge of each bin (columns 2 & 3) Phil By 4SINTH/LASQ bins (all statistics relative to Mn(I)) __ codebase="/usr/local/CCP4versions/Clapham/ccp4-6.1.1/bin">name="table" value=" $TABLE: Ana

[ccp4bb] detergent crystals

2009-08-04 Thread Parveen Goyal
Hi All, I got some hexagonal crystals in one of my crystal condition. The protein is a membrane protein and contains 0.05% DDM. Has anybody seen DDM crysals and if yes, how do they look like? thanks in advance Parveen Goyal

[ccp4bb] Heavy atom derivatives for large structures

2009-08-04 Thread George M. Sheldrick
Why is the tantalum bromide cluster the cluster derivative of choice for phasing large structures? As a inorganic chemist (in a previous incarnation) I can think of a lot of other possible clusters that might be suitable. I even have money from a bioinorganic grant that could finance a PhD student

Re: [ccp4bb] detergent crystals

2009-08-04 Thread Leigh Rees
Hi Parveen, Not a direct answer to your question but we could possibly help by X-raying the crystals in-situ whilst protected and undisturbed in the multi-well plate. This should definitively show whether they are protein or detergent crystals. Depending on where you are located, we may have a

Re: [ccp4bb] detergent crystals

2009-08-04 Thread Jose Antonio Cuesta Seijo
Hi Parveen. DDM crystals can look a bit like that. Like a pencil that has been sharpened from both ends until there is very little pencil left, but often the ends are flatter than that. You can get tons of these (also with DM) in conditions with medium weight PEGs. Of course many proteins will als

[ccp4bb] Beamline Scientist PROXIMA 2

2009-08-04 Thread SHEPARD William
Hello CCP4BBers, A permanent scientist position is open on the PROXIMA 2 beamline at SOLEIL. Please see below for more information. Cheers, Bill Beamline Scientist PROXIMA 2 (m/f) (Ref: EXP-102) SOLEIL is a state-of-the-art, third generation synchrotron radiation centre dedicate

Re: [ccp4bb] detergent crystals

2009-08-04 Thread Van Den Berg, Bert
Hi Jose, how do you know that those crystals were detergent and not protein? My impression is that it is really hard to crystallize DDM, and even harder for DM (solubilities > 20% in water). The easiest (?) way to check this may be to take some crystals, wash them well and run them out on a PAG

Re: [ccp4bb] detergent crystals

2009-08-04 Thread Pascal Egea
Hi Jose, It is quite difficult to crystallize DDM. The main problem is to estimate detergent concentration in the final sample. One method requires the use of chromatographic workstation coupled to a light scattering detector and refraction index measurement unit. In this case you can know if there

Re: [ccp4bb] detergent crystals

2009-08-04 Thread R.M. Garavito
Parveen, Bert and Pascal are correct in that most alkyl glycoside detergent are notoriously difficult to crystallize in aqueous solution when you have the beta-anomer (what we normally buy). However, the alpha-anomers can be quite easy to crystallize and can contaminate batches of beta- a

Re: [ccp4bb] detergent crystals

2009-08-04 Thread Jacob Keller
A recommendation: try looking at the crystals while rotating the polarizers. Often you can get detergent or detergent-protein complex "crystals" which have sharp edges, but are actually liquid crystals. This will be manifest as a compact-disc (or vinyl LP, depending on your vintage) appearance w

Re: [ccp4bb] resolution shells for each bin in scala?

2009-08-04 Thread Francis E Reyes
I was hoping for a break down for each bin similar to that of d*trek.. for example: Rmerge vs Resolution Resolution AverageNum Num I/sig I/sig Rducd Model Rmerge Rmerge range counts rej

Re: [ccp4bb] detergent crystals

2009-08-04 Thread Van Den Berg, Bert
This has been elaborated before, but you can safely assume they are NOT detergent crystals. DDM may be harder to crystallize than your average membrane proteinI hope those crystals diffract! Bert van den Berg University of Massachusetts Medical School Program in Molecular Medicine Biotech II

Re: [ccp4bb] CCP4 / Ubuntu 9.04 64-bit

2009-08-04 Thread Sankar narayanan
Thank you very much for the advice Dr. Weeks, I could run CCP4 GUI now with out any problem. As you have rightly said, I downloaded the COOT along with CCP4 as a package (generic linux x86 version). I will try downloading the CENT OS version and follow the method from the previous posts to r

[ccp4bb] REMINDER: AsCA'09 - October 22-25, 2009, Beijing, China

2009-08-04 Thread Mark Bartlam
AsCA'09 Beijing Joint Conference of the Asian Crystallographic Association and Chinese Crystallographic Society October 22-25, 2009, Beijing, China Website: http://www.ciccst.org.cn/asca09/ PLEASE NOTE: The deadline for submission of abstracts has been extended to August 5, 2009. SPONSORS: The