> Sent: 06 April 2011 18:16
> To: Nave, Colin (DLSLtd,RAL,DIA)
> Cc: CCP4BB@jiscmail.ac.uk
> Subject: **Possible spam**Re: [ccp4bb] FW: [ccp4bb] diffraction of
> spherulites
>
> It seems hard to imagine what there is anything in his solutions other
> than protein that would
It seems hard to imagine what there is anything in his solutions other
than protein that would make spherulites, no? PEG 8000 at 12% seems
pretty benign, unless the trays or screens have been sitting around
for quite a while...
JPK
On Wed, Apr 6, 2011 at 12:04 PM, Colin Nave wrote:
>
>
> Stefan
Stefan
Could the low angle reflections be from lamellar liquid crystals of the PEG (or
a mixed PEG/water phase). Seems like you have 1st,2nd and 4th order reflections
with presumably the 2nd order about 20A.
I think 40A lamellar spacing is characteristic of some PEG liquid crystals.
Colin
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