There are programs which are good at indexing patterns from multiply twinned crystals. Bruker AXS has one, to my knowledge. There may be other sources. I suggest you try that first before you invoke a quasicrystal explanation.
James Phillips On Tue, Feb 13, 2018 at 12:07 PM, Takanori Nakane <tnak...@mrc-lmb.cam.ac.uk > wrote: > Hi, > > "dials.reciprocal_space_viewer" is very useful to identify multiple > lattices. > For quasicrystal and modulated crystals, "dials.rs_mapper" is also very > useful. > > Best regards, > > Takanori Nakane > > > Have you tried microseeding of these sphere crystals? It may help to get > > better crystals. > > > > > > Burak > > > > ________________________________ > > From: CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> on behalf of Yu Qiu > > <yu....@sanofi.com> > > Sent: 13 February 2018 15:09:43 > > To: CCP4BB@JISCMAIL.AC.UK > > Subject: [ccp4bb] protein quasicrystals? > > > > > > Hi, > > > > > > > > I have been trying to crystallize a protein complex and keep getting > > sphere shape crystals. The diffraction is around 3 angstrom, but looks > > like multiple lattices. I am wondering if it could be a quasi crystal? Is > > there anyone has such experience? > > > > > > > > Thanks, > > > > Yu > > >