goddard at sonic.net
Thu Apr 18 09:10:08 PDT 2013
I don't understand what you are trying to do. My best guess is you have
a symmetric trimer crystal structure and you want to fit a monomer of
that atomic model into a 5-fold symmetric map. To do that I would open
the trimer atomic model, delete all except one monomer, fit it into one
of the 5 equivalent positions in the map, then use the "sym" command to
make the other 4 symmetrically placed copies. If I wanted to reduce
clashes I'd assign c5 symmetry to the map as described before and use
the "fitmap" command with the symmetric fitting option.
The "volume #0 symmetry c5" command doesn't give any error message like
"can't find symmetry". So I'm not sure what problem you are having.
You need to explain it more clearly.
> Tanks for your kindly answer!But i use the command volume #0 symmetry
> c5,it tell me that cann't find the semmetry. The map is made from
> crystal structure using "fit in map".it a trimer,i want to impose
> 5-symmetry in order to fit with my map.
> At 2013-04-17 05:43:04,"Tom Goddard" <goddard at sonic.net> wrote:
> How about the Chimera command
> volume #0 symmetry c5
> The symmetry assigned to the map isn't used for much in Chimera.
> It can be used for symmetric fitting but if you tell it the wrong
> symmetry you will just get nonsense fits. The other main use of
> symmetry is to replicate PDB models with the sym command. There
> you can specify the symmetry with command options. So I can't
> think of any reason you would use the above command.
>> Dear sir
>> I have some question in using your excellent Chimera.
>> How can i set 5 symmetry to a 3 symmetry map?
>> thank you
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