Jonathan,
when you add a water molecule through "Place atom at Pointer..." change the
default option at the bottom of the popup window from "New molecule" to
your protein molecule. In this way water molecule will be placed directly
into your protein model and will be visible in symmetry mates.

вт, 30 апр. 2019 г. в 22:21, Jonathan Cooper <
00000c2488af9525-dmarc-requ...@jiscmail.ac.uk>:

> One thing I have wondered about Coot is when you add new waters into the
> structure and these go into a molecule called 'Pointer Atoms...', I have
> never worked out how to get the symmetry mates of these newly inserted
> waters to appear unless I eventually merge them into the same pdb file as
> the protein.
>
> As an example, here is a newly inserted water molecule (A6) in
> Pointer-Atoms close to a 2-fold:
>
> http://www.ucl.ac.uk/~rmhajc0/watersym.jpg
>
> Is there a trick to get its symmetry mate to appear without merging the
> pdb's?
>
> I am trying to avoid the situation where you accidentally build two or
> more waters into the same density because the symmetry mates are not
> showing and have to go through all the waters again afterwards to sort it
> out. I have checked the 'Show Symmetry' box for that molecule and I have
> tried changing the radius, etc.
>
> Any clues much appreciated.
>
> Jon.C.
>
>
>
>
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-- 
Evgenii Osipov
Laboratory for Biocrystallography,
Department of Pharmaceutical Sciences,
KU Leuven O&N2

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