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Re: [ccp4bb]: Re: large Beta angle
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Jeff Taylor wrote:
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> > Dear All,
> > Denzo suggested a C2 cell with
> > a = 143 b = 63 c = 94 beta = 130.
> > Did anybody else observe such a large beta angle before in a protein crystal
> > with a monoclinic cell?
> > Klaus
> Unfortunately, I have one. My protein crystallizes in C2 with a=275.8,
> b=270.2, c=188.8, beta= 131.9.
> Good luck with yours!
> - JT
C2 cells often have this crazy angle; if you do an hklview plot of the
hnl layers you can often see a more "sensible" set of reciprocal lattice
vectors, with Beta nearer 90 degrees but they will require that you use
a non-standard space group such as I2.
ie the Beta isnt biologically relevent, but it serves to predict al