Hi all,
I have just finished doing
molecular replacement and an initial round of refinement
(with simulated annealing) on a number of different
datasets. They have all be straightforward since most of
them are either point mutants and/or co-crystal structures.
However, two of the structures are giving me some trouble.
The data appears to be of good quality and resolution (2.25
and 2.55Å). The MR proceeds as normal with good scores and
then in the subsequent round of refinement the maps (2Fo-Fc
and Fo-Fc) look strange. The density is stretched or
flattened in one direction. Can anyone help me with what I
may be overlooking?
Thanks in advance
JW