Re: [ccp4bb] Anomalous map creating

2009-10-27 Thread Eleanor Dodson
Well - doing an mtzdump on testXXX.mtz shows most of the DANO are missing.. and also most of the F_gp5-gp27(+)_nat so the problem is farther back.. OVERALL FILE STATISTICS for resolution range 0.000 - 0.119 === Col SortMinMaxNum % Mean Mean

Re: [ccp4bb] SAD phasing at home source

2009-10-27 Thread Eleanor Dodson
Almost all heavy atoms give a pretty good anom signal at CuKa. Hg Pt Sm arew great, but Cd and I are useable.. The trick is getting them into the crystal! Eleanor Georg Zocher wrote: Dear James, A little bit more old school but you might also try Uranium, Samarium and Gadolinium. In

Re: [ccp4bb] Help me!!

2009-10-27 Thread Gowriishankar Raju
Thank you for your replies. With Regards, Raju Gowriishankar

Re: [ccp4bb] Using own orientation matrix with imosflm.

2009-10-27 Thread Harry Powell
Hi I've answered Francis privately with the full details, but thought it may be polite anyway to post a response here. Sorry about the delay, I've been away. The short answer is that you need to use the option of specifying ipmosflm keywords for the very specialised options that are only

[ccp4bb] Minimum hardware requirement of Mac OSX for CCP4

2009-10-27 Thread J. Attarataya
Dear Sir, I am a new postgraduate from University of Bristol and am doing a project about protein crystallography. I have a question about minimum requirement for Mac OSX I have ordered new Mac desktop, iMac, for doing light job at my home. I found that a 21.5 inch iMac, Core 2 Duo 3.33 GHz and

Re: [ccp4bb] Minimum hardware requirement of Mac OSX for CCP4

2009-10-27 Thread Ronnie Berntsson
Hi Jakreda, With that computer you'll be well set to be doing basically everything you need for crystallography. CCP4, as well as all other programs you'll use, will run beautifully on that system. I'm currently using a MacBook Pro (2.4 GHz, core 2 duo) as my main working machine for

[ccp4bb] Postdoctoral Research Assistant at the Max-Delbrück-Centrum (MDC) Berlin, Germany

2009-10-27 Thread Uwe Mueller
The Max-Delbrück-Centrum (MDC) in Berlin-Buch is looking for a Postdoctoral Research Assistant for Macromolecular Structure and Interaction to support the operation of the MX beamlines located at the BESSY II storage ring (headed by Dr. Uwe Müller, BESSY/HZB) and to conduct research at the MDC

Re: [ccp4bb] Minimum hardware requirement of Mac OSX for CCP4

2009-10-27 Thread Roger Rowlett
I can run CCP4i and Coot on a netbook, so you should be fine. You have 4X the CPU power of my netbook and dedicated graphics, so no problemo. My at-work desktop stations are Core 2 Duo 3.0 GHz with NVidia 9000-series graphics cards, 256-1024 Mbyte, with 23" LCD screens, and they are plenty

Re: [ccp4bb] Minimum hardware requirement of Mac OSX for CCP4

2009-10-27 Thread Dirk Kostrewa
Dear Jakrada, I agree with Ronnie Berntsson and Roger Rowlett. The only thing that you can't do on those machines is to work with Coot in stereo 3D. Currently, you would need a MacPro and a special Nvidia Quadro graphics card (and stereo glasses emitter) for that. Best regards, Dirk. Am

Re: [ccp4bb] Minimum hardware requirement of Mac OSX for CCP4

2009-10-27 Thread Ben Eisenbraun
On Tue, Oct 27, 2009 at 02:13:48PM +0100, Dirk Kostrewa wrote: I agree with Ronnie Berntsson and Roger Rowlett. The only thing that you can't do on those machines is to work with Coot in stereo 3D. Currently, you would need a MacPro and a special Nvidia Quadro graphics card (and stereo

[ccp4bb] fix or scale bfactors during processing?

2009-10-27 Thread Francis E Reyes
Hi all I have pretty low res data (4-4.5A) and was wondering what's the suggestion for allowing the bfactors to vary or keep them fixed during scaling. If I fix them, xtriage reports wonderful anomalous signal whereas if they are varied, the anomalous signal is gone. I have natives and

Re: [ccp4bb] fix or scale bfactors during processing?

2009-10-27 Thread Edward A. Berry
Francis E Reyes wrote: Hi all I have pretty low res data (4-4.5A) and was wondering what's the suggestion for allowing the bfactors to vary or keep them fixed during scaling. If I fix them, xtriage reports wonderful anomalous signal whereas if they are varied, the anomalous signal is gone. I

[ccp4bb] small molecule library

2009-10-27 Thread c.weinert
Dear all. I am looking for a library of small (biologically relevant) compounds to test binding to a protein. Does somebody know, if there is a company that sells such a library for fragment based library screening? (to a reasonable price). And does anybody has experience with screening

[ccp4bb] PhD Position in Structural Biology, Wuerzburg, Germany

2009-10-27 Thread Clemens Grimm
A PhD position in structural biology is available in the group of Prof. Utz Fischer at the Institute of Biochemistry, Biocentre of the Julius Maximilans-University, Wuerzburg/Germany. The successful applicant will work on the crystallographic structure determination of the Survival Motor

Re: [ccp4bb] small molecule library

2009-10-27 Thread Jurgen Bosch
Try Emerald, reasonable price, nö comment. Jürgen .. Jürgen Bosch Johns Hopkins Bloomberg School of Public Health Department of Biochemistry Molecular Biology Johns Hopkins Malaria Research Institute 615 North Wolfe Street, W8708 Baltimore, MD 21205 Phone: +1-410-614-4742

Re: [ccp4bb] Anomalous map creating

2009-10-27 Thread Tommi Kajander
to the original poster: please do not attache several MB files... Tommi On Oct 27, 2009, at 11:24 AM, Eleanor Dodson wrote: Well - doing an mtzdump on testXXX.mtz shows most of the DANO are missing.. and also most of the F_gp5-gp27(+)_nat so the problem is farther back.. OVERALL FILE

Re: [ccp4bb] small molecule library

2009-10-27 Thread Shao-Yang Ku
informahealthcare.com/doi/pdf/10.1517/17460441.1.1.1 Quoting c.weinert c.wein...@bioc.uzh.ch: Dear all. I am looking for a library of small (biologically relevant) compounds to test binding to a protein. Does somebody know, if there is a company that sells such a library for fragment

[ccp4bb] Parallelization of Phaser and other programs part of CCP4

2009-10-27 Thread Christian Rausch
Dear colleagues, is there a parallelized version of Phaser? How about other programs that are part of the current CCP4 distribution? Thank you, Christian Rausch -- Dr. Christian Rausch

Re: [ccp4bb] How to compare the binding affinity between two domains structurally?

2009-10-27 Thread Tommi Kajander
this will only give an estimate of *electrostatic* contributions via poisson boltzmann calculations NOT *binding* energy. certainly one way to try to estimate those (and hyrdophobics via buried surface area?). perhaps FEP/MD or something that actually takes into account hydrogen bonding

[ccp4bb] Postdoctoral positions, Rice University, TX, USA

2009-10-27 Thread Yizhi Jane Tao
Two new NIH-funded postdoctoral positions are immediately open in the laboratory of Dr. Yizhi Jane Tao at Rice University, Houston, TX, USA. The project is to study the structure and function of the RNA virus replication machinery using X-ray crystallography and other biochemical and biophysical

Re: [ccp4bb] SAD phasing at home source

2009-10-27 Thread Watanabe Nobuhisa
If your crystal diffracts well and tough enough for high redundant data collection, no HA or using sulfur in your protein will be the first choice. Even at Cu K-alpha. I think... N. Watanabe On 2009/10/27, at 3:32, james09 pruza wrote: Dear All, I need some suggestions regarding the SAD

Re: [ccp4bb] small molecule library

2009-10-27 Thread Hernani Silvestre
You have several companies out there that sell that. You have Enamine - large collection, good but$, Maybridge - good but Zenobia Inc - good, and not so leo On 27 Oct 2009, at 14:58, c.weinert wrote: Dear all. I am looking for a library of small (biologically relevant)

Re: [ccp4bb] small molecule library

2009-10-27 Thread Pascal Egea
I can suggest the following reading Discovering novel ligands for macromolecules uisng X-ray crystallographic screening Nienaber VL et al, Nature Biotechnology vol 18 october 2000 pp1105 -- Pascal F. Egea, PhD Assistant Professor UCLA, David Geffen School of Medicine Department of Biological

Re: [ccp4bb] small molecule library

2009-10-27 Thread Sridhar Prasad
Zenobia is a good place to look for, they can even customize it your needs. www.zenobiatherapeutics.com Sridhar Date: Wed, 28 Oct 2009 01:41:22 + From: hlsilves...@gmail.com Subject: Re: [ccp4bb] small molecule library To: CCP4BB@JISCMAIL.AC.UK You have several companies out

[ccp4bb] Inclusion bodies centrifugation

2009-10-27 Thread megha goyal
Dear All, Our protein is expressed as inclusion bodies and I want to separate inclusion bodies from E.coli from the cellular debris after* *lysis of the cells by sonication. Can I do this by normal centrifugation? and if yes, at what speed? Our centrifuge has maximum speed of 14000 rpm. Can we

Re: [ccp4bb] Inclusion bodies centrifugation

2009-10-27 Thread Artem Evdokimov
IB's precipitate in a few minutes at max. speed of tabletop Eppendorf. Almost any speed above 5-6K in a larger rotor will precipitate them in 10-20 minutes, provided that the density of your IB wash is normal (i.e. you're not using 70% sucrose, Renografin, or Cesium Chloride etc). In other

Re: [ccp4bb] small molecule library

2009-10-27 Thread Jürgen Bosch
Hi Christopher, have a look at this paper and the references. Using fragment cocktail crystallography to assist inhibitor design of Trypanosoma brucei nucleoside 2-deoxyribosyltransferase. J Med Chem (2006) vol. 49 (20) pp. 5939-46 The SEC after soaking is a bad idea, you will loose your

Re: [ccp4bb] small molecule library

2009-10-27 Thread Artem Evdokimov
Fragment based discovery is a fairly new but also fairly well established technique. There is a difference between fragment screening and targeted library screening, however notes below generally apply to both: Libraries – depending on what you want to discover you should try to obtain a