Dear all,
Is there a documented case of a structure determination from a hollow crystal?
We have the unfortunate situation that a protein only crystallizes as a hollow
tube, where the inside is filled with solvent, which ruins the diffraction
patterns.
I was often confronted with similar
Dear CCP4ers,
I'd like to kindly ask your advice. Sorry for the long e-mail.
I have crystals of a 12.3 KDa protein that grow in hexagon-like patterns, link
for the crystal image:
http://fullonline.org/science/cryst01.jpg
XDS, Phenix and Pointless always suggest that the data sets for these
And again, has anyone seen the code to even know what's going on "under the
hood"?
Thanks,
Steve
> On Nov 29, 2016, at 8:35 PM, dusan turk wrote:
>
> Guys,
>
> I have a two issues to add here:
>
> 1. RSZS validation does not tolerate chain IDs longer than 1 character,
>
There are two weeks left to apply for the RapiData 2017 course on Data
Collection and Structure Solving. The course will take place at SSRL on April
16-21 2017. It is a great venue for young scientists to learn how to optimize
macromolecular crystallography experiments at synchrotron beamlines
Guys,
I have a two issues to add here:
1. RSZS validation does not tolerate chain IDs longer than 1 character,
so it kills one of the very essential reasons why mmCIF format was
introduced (to enable deposition of large structures in a single file).
2. I have noticed in validation report of
CCP4 package manager doesn't work for me when I try a fresh ccp4
installation. It goes through all the question dialogs, but then fails to
download the actual installation package, complaining of broken network
connection. Multiple tries don't help. Obviously, I can get around this
by
Thanks for all you providing these info. Charles
On Mon, Nov 28, 2016 at 4:33 PM, Alexandre OURJOUMTSEV
wrote:
> Dear Charles,
>
>
> if you are interested in applications of wavelets to macromolecular
> crystallography problems, you may look also at a slightly earlier
>
Benzopinacol? It's sometimes used as the initiator for radical
polymerisations, so its presence in plasticware wouldn't be unheard of.
On 2016-11-27 10:33, Wei Liu wrote:
Dear all,
We have recently crystallized a recombinant protein produce from E.
coli, and determined the structure at 1.9 Å.
Wei,
Did you crystallize your protein in plastic trays? If my memory serves me,
there is at least one case of monoamine oxidase B (from the Edmondson and
Mattevi groups) where MOAB bound the plasticizer from the wells. You might
want to explore that direction as well.
Regards,
Michael
I started a ccp4 thread a few years ago about RSRZ score calculations
favoring trimmed side chains because they produce better scores. Based on
what I could find at that time, it looked like the density of your
structure was compared to the density of that residue type in submitted
PDBs of similar
Is the code publically available for the RSRZ calculation?
Thanks,
Steve
-Original Message-
From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Ethan
Merritt
Sent: Tuesday, November 29, 2016 12:46 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] Calculation of RSRZ
Dear Wei,to get more information on this putative “butterfly-like” ligand, you can perform non-denaturing and denaturing mass spectrometry. This should give you the molecular weight of this compound, which most probably comes from E. coli and co-purifies with your protein of interest. In parallel,
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