Hello Renate Gessmann,

On 11/04/14 04:19, Renate Gessmann wrote:
How do I complete a residue when I have only one atom (for example
the SG in Cys as part of a disulfite bond), but nice density without neighboring
residues? So, a 'add terminal residue' is not possible,

If I understood correctly, you want to add a Cys, connected via a disulfide bond to a Cys that you have already. If so, then yes, you are right, "Add Terminal Residue" is not useful for you, as that adds only via peptide links.

  and if possible, I would like not to go to 'Ca-baton-mode'.

Very reasonable.   And that also only adds via peptide links.

Same problem arises when the C=O group somewhere
is missing.

Yes, that's right.  Coot needs 4 backbone atoms (I think).

Here the workaround is, to delete the other atoms of the residue and
to 'add a terminal residue'.

Yes, that's right (and is part of the tutorial).

If I place the missing atoms 'on
pointer', they have a different name and chain,

Different names? Not sure that I agree with that - the atom names and the residue name should be correct. Get monomer will create a new molecule sure, you can merge that in with the current one...

so I have to leave
coot to edit it correctly.

You can renumber and change change ids in Coot - it's a bit clumsy a the moment though. It should be more clever.

There is surely something more easy.


:-(.  But maybe I misunderstood.

If you have the main-chain atoms in place, then you can complete the residue with side-chain atoms using fill-partial-residue (which I have bound to the "k" key).

Hope this helps.

Paul.

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