Dear Crystallographers,
Is there any software in CCP4 which can solve twinned structures? I have
several datasets which appear to be tetartohedrally twinned, with possible
spacegroup of p31/p32 masquerading as p6222/p6422. I think this is
approximately equivalent to 1/8-fold NCS?
The data
Dear Jacob,
For the molecular replacement part, twinning is not a great barrier. We've
generally found that, as long as you get the space group right (which can be an
issue with twinned crystals), the signal in the MR search is not that badly
degraded. You could easily set up a search using
