The metal ion is looking reasonable, and it is also chemically sensible
based on the crystallization conditions. Add another water around the
remaining positive difference density and see if the resulting geometry
looks remotely octahedral. From the one, view provided, it does appear
to be an a
The metal ion is looking reasonable, and it is also chemically sensible
based on the crystallization conditions. Add another water around the
remaining positive difference density and see if the resulting geometry
looks remotely octahedral. From the one, view provided, it does appear
to be an a
Definitely Ni, and maybe add another two waters to fill in the density.
Regarding B-factors, it depends on those of the surrounding side chains, and
should be a bit higher than theirs. Also, since it’s probably not a
biologically-relevant Ni site, it would have low affinity and therefore you
co
Well the problem is there is a lot more to a ligand than PDB
coordinates - little things like bond orders... In addition people can
publish ligands with atoms for which they have no density - so
zero-occupancy is allowed too. So who should get priority - the group
who publishes a ligand first, or t
Title: Postdoctoral position in protein crystallography of natural product
enzymes
Location: Dowling lab, Chemistry Department, University of Massachusetts Boston
Description: The Dowling lab utilizes biochemical techniques and X-ray
crystallography to study the structure and function of impor
It's probably much less likely than metal coordination and it's hard to
judge from only one angle, but phospho-histidine might be something else to
consider.
http://www.jbc.org/content/276/5/3247.full
Shane
On Mon, Jun 22, 2015 at 2:15 PM, Roger Rowlett wrote:
> I agree...one possibility is a
I often say this, but check the anomalous difference Fourier. You don't say
what resolution your data reaches to, or what wavelength the data is
collected at, but if the model is well refined you often can see anomalous
peaks for Ss, and they give you a relative scale for any anomalous feature
whic
I agree...one possibility is a M-His(2)-Lys-(OH2) site. Possible metal
ions would include Zn(II), although Lys is a relatively rare ligand in
zinc-metalloenzyme sites.
Cheers,
___
Roger S. Rowlett
Gordon & Dorothy Kline Professor
Department of Chemistry
Colg
Looks to me like a metal binding site with those histidines, perhaps--any
chance of that? That might also explain the weird geometry issues.
JPK
-Original Message-
From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Dale
Tronrud
Sent: Monday, June 22, 2015 11:17 AM
To:
It is possible that your PO4 has its atoms labeled with the wrong
chirality. Yes, I know that PO4 is not chiral when you ignore hydrogen
atoms and single/double bonds but adding labels creates an unnatural
chriality. Try your refinement again after switching the labels on two
oxygen atoms.
Da
Dear Ruth,
Aligent and Shimadzu have their own liquid chromotagraphy instrument, as I
know.
Regards!
Lu Zuokun
--
卢作焜
南开大学新生物站A202
在 2015-06-22 16:38:30，"Ruth Brenk" 写道：
>Hi,
>
>does anybody known a manufacturer of a protein purification system
>besides Biorad and GE Healthcare
Hi,
does anybody known a manufacturer of a protein purification system
besides Biorad and GE Healthcare ?
We need a third one for a tender process.
Thanks
Ruth
--
Jun.-Prof. Dr. Ruth Brenk
Johannes Gutenberg-Universität Mainz
Institut für Pharmazie und Biochemie
Staudinger Weg 5
D-55128 Main
Hi Tobias,
thank you very much now it works again.
Best,
Almudena
2015-06-22 10:06 GMT+02:00 Weinert Tobias (PSI) :
> Dear Almudena,
>
> Unfortunately hkl2map does not allow you to use more than 25 mio
> reflections for shelxc. But you can simply use the script it generates,
> edit MAXM
Dear Almudena,
Unfortunately hkl2map does not allow you to use more than 25 mio reflections
for shelxc. But you can simply use the script it generates, edit MAXM to make
space for more & then run shelxc from the command line.
[cid:DED89FCB-49D6-4663-BE9E-95881749B5A5]
With kind regards,
Tobia
Dear all,
when trying to run hkl2map I get the following message:
*not enough memory to store reflections, increase MAXM or buy more RAM*
any idea about what this means? I run it once yesterday without any
trouble, and suddenly this appeared when I tried to run it again.
Thanks a lot in advance
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