SHELX does not need a parameter to control the relative weights of
restraints and X-ray data, it is performed automatically. However you
can change the restraint esds, either individually or globally using
DEFS, though the default values are generally OK. There is bound to be
some difference
Dear all,
I have a quick question about COOT:
Can the program write out maps (e.g. those generated by the
'NCS maps' averaging function) ?
Thanks and best wishes,
Chris
Christoph Meier
UCB-Celltech
216 Bath Road
Slough SL1 4EN
United Kingdom
Tel:
*Biological Neutron Crystallography at EMBL Grenoble and the Institut
Laue-Langevin*
*Job description:* We seek a postdoctoral research fellow to work in the
field of neutron protein crystallography using the newly upgraded
neutron Laue diffractometer, LADI-III, at the Institute Laue Lamgevin
I believe Phaser places CRYST1 record at the top of an output
pdb-file... Yanming, did you try lower symmetry spacegroups?
Eleanor Dodson wrote:
It seems very odd..in fact almost impossible. You still have 3 correct
molecules
I wonder if there is some error in the coordinate file?
Errors I
Not purely a ccp4 question, but an MTZ file is involved, so stick with me.
I've collected a SAD data set, and processed with XDS. I can use XDSCONV
to generate an MTZ, SHELX, and CNS file. I chose the MTZ file since it
keeps the intensities. SHELX does too (the F**2), but has separate lines
for
Hi,
I believe that SOLVE can read MTZ format files directly so there is no
need to convert it to anything else. However if you do feel the need to
perform some file conversion I would get mtz2sca (google it) and convert
the MTZ intensities to scalepack format, then read these in as
PREMERGED.
I had some luck once cutting the crystal out of skin with a razorblade.
When the skin is extremely sticky, you tend to get your crystal wrapped
up in it (which may be OK - you just get more background scatter) and
carefully cutting skin on all four sides may be a better option.
Wang, Yeming
Does anyone have a genuine CNS file (i.e. not exported from CCP4) which
has HL ABCD coeffs in it?
I need the complete file, and also the spacegroup and cell.
Thanks,
Kevin
Acupuncture needles might be the answer: If you turn the drop over, the the
membrane is on top and the crystals hang off it. So you stick the needle
into the membrane from the side, and gently poke the crystals so they fall
off the membrane to the bottom. When you've knocked all of them down,
___
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Researchers using synchrotron radiation for macromolecular
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