Re: [ccp4bb] Fwd: Re: Question about the statistical analysis-might be a bit off topic

2011-06-09 Thread Ed Pozharski
Kay, > The Wikipedia's "error propagation" article in its "Caveats > and Warnings" paragraph calls this a Cauchy distribution. And that sounds strange to me. p.d.f. of the Cauchy distribution is non-zero for any finite argument, whereas the p.d.f. for the "inverse Gaussian" must tend to zero at

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread Felix Frolow
I still keep a bill of SGI Indigo memory extension from 64 Mb to 128Mb - $ 12,000 from Kingston in 1994 Friends, do not be niggards, life is much nicer today. Dr Felix Frolow Professor of Structural Biology and Biotechnology Department of Molecular Microbiology and Biotechnology Tel Aviv Unive

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread William Scott
Yeah, I know what you mean. That Zalman 3D LCD monitor put me back almost $300, and the mac mini I hooked it to, nearly another $600. My SGIs only cost $12K each in 1998. On Jun 9, 2011, at 9:43 AM, Mayer, Mark (NIH/NICHD) [E] wrote: > The sad thing is, although Macs are great crystallograph

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread Ben Eisenbraun
On Thu, Jun 09, 2011 at 12:43:07PM -0400, Mayer, Mark (NIH/NICHD) [E] wrote: > The sad thing is, although Macs are great crystallography platforms, > stereo is hard at best, ridiculously expensive compared to Linux systems, > and still requires the use of CRTs which have not been manufactured for >

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread Mayer, Mark (NIH/NICHD) [E]
The sad thing is, although Macs are great crystallography platforms, stereo is hard at best, ridiculously expensive compared to Linux systems, and still requires the use of CRTs which have not been manufactured for years ...

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread Jim Fairman
Perhaps the shape is meant to amplify the Steve Jobs' "Reality Distortion Field"? On Thu, Jun 9, 2011 at 11:49 AM, Vellieux Frederic wrote: > Sorry, a bit off topic. But in the news today (check google news for > example): Steve Jobs (Apple) has revealed his plans for the new "Apple > campus" (A

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread Bosch, Juergen
Unfortunately it won't be in such a nice setting as ESRF though. http://www.linuxjournal.com/files/linuxjournal.com/linuxjournal/articles/036/3612/3612f1.jpg And who knows there might be an App for that (Remote Data Collection on your iPhone). I heard rumors that SSRL is implementing iRDC soon. Cu

Re: [ccp4bb] regarding refinement and structure determination by MR

2011-06-09 Thread Herman . Schreuder
Dear Ting-Wei, 1) Refmac writes model statistics like RMS bond lengths, angles etc. in the header of the ouput pdb. Open the output pdb in your favorite editor and look for REMARK 3 cards. There you find probably all the information you need. 2) You give very little details, so here I can only

Re: [ccp4bb] regarding refinement and structure determination by MR

2011-06-09 Thread Eleanor Dodson
First Q. Checking the refined structure in detail.. This is personal. Basic - run REFMAC with monitor many - that lists really bad bonds, chirality, symmetry clashes etc, but frankly by the time you are at R=20% there shouldnt be many of those.. You need to be sure you have described any CIS pe

Re: [ccp4bb] Two different asymmetric units from two different crystallization conditions

2011-06-09 Thread Eleanor Dodson
On 06/08/2011 07:19 PM, Shiva Bhowmik wrote: Dear All, I am working on a protein structure that yielded comparable diffraction quality crystals from two different crystallization condition. One of the crystallization condition conatins high conc. of salt pptant whereas the oher one contains hig

[ccp4bb] Diamond phase III proposal. Call for Expressions of Interest. Deadline looming!

2011-06-09 Thread Johan Turkenburg
Please don't hit delete yet, read on! First of all, many thanks to all the people who have already submitted a letter of support for the initiative "Versatile microfocus beamline with a side-station for in-situ diffraction". It is essential that we get as many letters of support as possible, to s

Re: [ccp4bb] regarding refinement and structure determination by MR

2011-06-09 Thread Mark J van Raaij
1. I would recommend to use Molprobity on the website: http://molprobity.biochem.duke.edu/ 2. Remember that if your spacegroup is P1, the origin (i.e. translations along a, b and c) is not determined and the first molecule may be placed anywhere. Similarly, in monoclinic spacegroups, the transla