Dear CCP4 list,
We have a PhD studentship funded by a New Zealand Royal Society
Marsden Grant for three years to investigate the structure,
functional properties and regulation of an enzyme hypothesised to be
important for cellular responses to hypoxia and/or low glucose
concentrations,
Hi Ian,
many thanks! Apparently, I have to discard now my favorite hypothesis
about the position of the 7-fold ...
Still, if you know about a good reference, I would really like to
read it.
Best regards,
Dirk.
Am 22.11.2007 um 15:28 schrieb Ian Tickle:
Hi Dirk
Sorry yes you're right
Hi Dirk
Sorry yes you're right I'm talking nonsense, c* will be at phi=90;
that's what comes of not making a diagram! As far as the description of
dyads goes the POLARRFN description is complete. It's only incomplete
for higher order axes, so I think the symmetry you hope to find doesn't
exist.
On Nov 22, 2007, at 14:43, Kay Diederichs wrote:
Pierre Barraud schrieb:
Dear all,
I am working on a data set which is severely anisotropic, with
diffraction limits of 2.6 A along the a* and b* direction but only
3.3 A along the c* direction. I attached a screen shot of the
Anisotropic a
Hi Ian,
thanks for the POLARRFN pointer - I've read this before, but I didn't
find it complete enough ...
Shouldn't the c*-axis have Phi=90, since it is c*=axb? I don't see a
peak at 180-Phi, but I thought that there might be other symmetry-
equivalent peaks that have some rule for Phi, Psi,
Hi
If you want to integrate anisotropically, Mosflm has allowed it since
late in the last Century.
However, the last time I mentioned it to Garib he said that he'd prefer
to have the data integrated isotropically (even the data that "aren't
there becasue they're too weak").
On 22 Nov 2007
Dear Pierre,
there is also a "Diffraction Anisotropy Server" at UCLA that does
some scaling and truncating of anisotropic data, possibly making your
crystallographic life a bit easier ... but I don't have personal
experiences with this approach.
Have a look at http://www.doe-mbi.ucla.edu/~
Hi Dirk
There's a useable (though slightly incomplete) description of the
symmetry of SRF's in the POLARRFN doc, though this only talks about the
symmetry of the stereographic projection itself and then only about the
effect of crystallographic dyads. Higher order rotations about z will
obviously
Pierre Barraud schrieb:
Dear all,
I am working on a data set which is severely anisotropic, with
diffraction limits of 2.6 A along the a* and b* direction but only 3.3 A
along the c* direction. I attached a screen shot of the Anisotropic
analysis (FALLOFF) output graph from SCALA.
My questio
Dear CCP4ers,
does any of you have a good reference describing the symmetry of
crystallographic stereographic projections? There is a lot of
literature describing rotational symmetry in Eulerian angular space,
but I'm not aware of any for polar angles. In particular, I've
calculated a sel
Dear all,
I am working on a data set which is severely anisotropic, with
diffraction limits of 2.6 A along the a* and b* direction but only 3.3 A
along the c* direction. I attached a screen shot of the Anisotropic
analysis (FALLOFF) output graph from SCALA.
My question is : what is the best s
If I may make a general note:
I would suggest to everybody not to install anything as the 'root'
user, unless these are system utilities.
Most if not all packages can be installed under a user account, or
under another dedicated account (eg Software)
and be made available to others. This ha
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