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On Fri, 3 Feb 2006, Harry Powell wrote: > lovely. might it be due to an incommensurate modulated phase? > > membrane protein) are made of stacks of 2D crystals (SG P321). This > > stacking is very often not that ordered, which leads to different > > layers with different orientation within the same crystal. The space sounds like a quasi-crystal is possible - take a look at: acta_cryst.a36.399-408.1980, J. Appl. Cryst. (2003). 36, 1101-1102, giacovazzo's "fundamentals of crystallography". fine phi-slicing is apparently necessary to tease apart the lattices (from what i have read). -bryan
