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Hi Oliver,
these type of questions seem to occur more frequently. I would find it much
better (less error prone) if EM programs would handle crystallographic input
as such, rather than the other way round - maybe you could ask the authors the
the program that displays only one quarter of the map if they you incorporate
symmetry operations?
Best,
Tim
On Wednesday, February 03, 2016 02:31:40 PM Paul Emsley wrote:
> On 02/02/2016 22:25, Oliver Clarke wrote:
> > Would it be possible to tweak the "File...Export map" functionality of
> > coot so that it optionally exports the map corresponding to the unit
> > cell, rather than the asymmetric unit? For EM maps of ion channels (or I
> > guess other symmetric complexes) this would be convenient - I deal a lot
> > with tetrameric ion channels, so generally I will build a single protomer
> > into a P4 mtz. Coot is a very useful way to find the appropriate
> > resolution to filter to in order to visualize specific structural
> > elements, but when I export a map that has been filtered to a given
> > resolution using coot, I get back one quarter of my ion channel. It would
> > be useful to be able to directly export the whole map corresponding to
> > the unit cell (I know I could convert the mtz to P1 and it would work,
> > but I am lazy and it would be nice to have a direct way).
> Hello Oliver,
>
> (Not using Coot) Using mapmask UNIT is probably the easiest way.
>
> But having the unit cell may not be what you want (depending on where
> the 4-folds are).
>
> Perhaps generate the tetramer as a molecule and Export map fragment
> around that?
>
> Regards,
>
> Paul.
- --
- --
Paul Scherrer Institut
Tim Gruene
- - persoenlich -
OFLC/102
CH-5232 Villigen PSI
phone: +41 (0)56 310 5754
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