This is very common.
You need to set the occupancy of something on the 3 fold axis to 0.33333
of course.
If you have an anom measurement then do a DANO map with PHIC and FOM
(you need to run CAD to combine the mtz file with DANO with the output
of REFMAC) - the peaks should correspond to any metals or S or whatever..
Eleanor
and this should Tobias Karlberg wrote:
*** For details on how to be removed from this list visit the ***
*** CCP4 home page http://www.ccp4.ac.uk ***
Hello ccp4bb,
I have data with electron density at a crystallographic threefold axis. The density is not perfectly spherical and I suspect a metal to bind at this site. What is the best strategy to handle density at crystallographic symmetry axes?
Does anyone have similar experience of this kind?
Regards Tobias
Tobias Karlberg
--------------------------------------------
Molecular Biophysics, Center for Chemistry & Chemical Engineering,
Lund University, Box 124, 221 00, Lund - Sweden
E-mail: [EMAIL PROTECTED]
Web: http://www.mbfys.lu.se
begin:vcard
fn:Eleanor Dodson
n:Dodson;Eleanor
email;internet:[EMAIL PROTECTED]
tel;work:+44 (0) 1904 328259
tel;fax:+44 (0) 1904 328266
tel;home:+44 (0) 1904 424449
version:2.1
end:vcard
