One question - do you have two pairs of molecules, each related by the
PST or is there extra non-crystallographic translation ?
Averaging or NCS restraints dont give much extra information for
molecules in the same orientation.
Certainly any pseudo translation will generate sets of weak and
I have four molecules arranged such that molecules a and b are
related by PST and adopt the same orientation as do molecules c and
d, but there is no pst between the two pairs. All molecules lie
in the same plane.
A B
top view C
Hi Maruf,
1) Why the low-resolution data was collected to 3.2 Å?
2) Is it possible the real space group is P2 with a NCS which making
it look like P21, especially when the PST has a value of exact 0.5.
Lijun
On Jul 14, 2008, at 5:42 AM, Maruf Ali wrote:
Dear all
I have recently
Dear all
I have recently collected several datasets on different crystals of a
particular protein with a resolution range form 2.4 - 3.2A. All
datasets seem to process well in p21 with a unit cell of 109.6
83.1 115.87 90 94.8 90, and this space group is further
supported by
Dear Maruf,
I had a similar case, also to 2.4A. Those translations are often
caused by a non-crystallographic 2-fold rotation which is parallel to
the crystallographic 2-fold (there is an example in ruppweb as to why
that creates the translation and how to interpret it: http://
