Dear CCP4 and XDS users, I have a P21 case with some strange ratios in the cell dimensions : a, b=a, c=1.5a, 90, 105, 90. The native patterson shows a strong peak (40% of origin) at (x,0.5,0) indicating some pseudo symmetry. Such cell dimension and peak prompted me to think that the actual space group is side-centered. However in XDS any choice of such space groups receives bad scores. Could XDS be wrong in such a case ?
Thank you in advance for your time, Peter.
