[ccp4bb] Molecular replacement with merohedarlly twinned data

2009-09-11 Thread Pietro Roversi
Dear all, when searching in Molecular Replacement against say perfectly merohedrally twinned data (i.e. an alpha=0.5 twin) do I understand it right that I should expect two sets of solutions that are equivalent under the twin operator (bar xtal symmetry and/or origin shifts)?

Re: [ccp4bb] Molecular replacement with merohedarlly twinned data

2009-09-11 Thread Randy Read
Yes, but if the twin fraction deviates even slightly from 1/2, you may only get one solution from the search. If you want, you can generate the other one and see how happy the program is. Regards, Randy On 11 Sep 2009, at 15:12, Pietro Roversi wrote: Dear all, when