Dear All,
After I send out the 'SOS' for my multi-copy problem, I have received many
good suggestions and tips. Many thanks to all of you.
Now my problem has been solved:
1, There are only 4 molecules in a.u, even the solvent containt is high,
it is not uncommon for a data with low resolution and high symmetry.
2, CNS anneal can do the magic work to get rid of un-even density
distribution among all 4 chains.
3, Now my R-value is 36% R-free is 41% around. Few turns fiting can finish
my structure up, I think
Crystallographers in the world is like one family. One difficulty, many
helps! Thank you all for your kind replies and your times.
Yanming
On Wed, 14 Feb 2007, Petrus H Zwart wrote:
This isnt any real help but I cant solve a ferritin structure in
SG I432
- it probably forms a cage like the other feritins around the
origin,
but every solution I get clashes with others..
After listening to a lecture by a small molecule crystallographer
I
wondered whether there isnt some crystal defect but I am not sure
how to
monitor it..
Eleanor
Hi Elenaor,
Your problem reminds me of this paper:
http://journals.iucr.org/a/issues/2004/04/00/lc0065/index.html
Not sure if it is related (probably not), but the phenomenon itself is
interesting
Cheers
Peter
