Hi,
The point is to check where you have the non helicoidal 2fold axis (no
extinction). I guess, it will be the 2-fold axis along your a parameter.
Then, you have to reindex, because the convention is to choose the 2
fold axis along c.
Goood luck,
Claudine
U Sam wrote:
Hi
I crystallized a protein in different condition than reported before and
structure had been already reported by other group. In both cases space
group is P21 21 2
Right now I am not interested in solving the structure, but to look for
some other properties.
I see a difference in cell dimension as follows.
Reported structure
a = 96.54
b = 121.95
c = 75.33
For my crystal
a = 75.03
b = 96.50
c = 121.98
This the cell dimensions are ~equal in lengths but are associated with
different axis compare to the reported crysta structure. I used HKL2000
for indexing.
I would like to know why the above difference in cell dimensions.
Is there any way I can index my data which would give cell parameters of
reported structure?
thanks in advance for any suggestion/comments.
sam
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Dr Claudine MAYER
MCF Université Paris 6
LRMA
INSERM U655
Laboratoire de Bactériologie (5ème étage gauche)
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