Hello everyone, I collected a dataset which looked like it is twinned ( or a really long axis in the cell) and did not process in HKL2000 and MOSFLM but with some of help and suggestions from CCP4BB, XDS was able to process it. The data looks good upto 1.7 Å. However, the rfree is stuck at 0.34 even though my model is almost complete. I am beginning to wonder if the data is really twinned as it has the characteristics of non- merohedral twinning: In the images some of the reflections are sharp while some are split and one of the axis in the cell is usually long ( the cell is a= 46.78 b= 46.78 c= 400.34; 90 90 90)
is there anyway to work around this ? or collecting better data is the only solution ? Any help is deeply appreciated Thanks Mahesh
