[phenixbb] sulfate on a 2 fold axis

[David Cobessi]

Hi,
I am finishing to refine a structure using Phenix. A sulfate ion is 
located on a 2 fold axis. When I refine the structure with Refmac, the 
geometry of the ion is well conserved, while when I use Phenix the 
geometry is destroyed and the sulfate ion is like a cross!! Any idea to 
keep the good geometry of this ion in Phenix during the refinement?
Thanks in advance,
David

-- 
David Cobessi
Institut de Biologie Structurale
41, Rue Jules Horowitz
38027 Grenoble Cedex-1, France
Tel:33(0)438789613
    33(0)608164340
Fax:33(0)438785122