[Chimera-users] joining peptides

Elaine Meng meng at cgl.ucsf.edu
Thu Jan 30 11:10:03 PST 2014

Hi Haresh,
As the message on the dialog says, the two parts must be in two different models, and only the C-term carbon of one and the N-term nitrogen of the other (exactly two atoms) should be selected.  I can't tell if any of those are true from your screen shot.   Make sure they are two different models and hide ribbon (e.g. Actions… Ribbon… hide) so you can see the backbone atoms and make sure only those two atoms are selected.  Possible problems may be you have >2 atoms selected or the wrong atoms, for example, both are at the C-term.
Elaine C. Meng, Ph.D. 
UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Jan 30, 2014, at 10:53 AM, Haresh Tukaram More <htm211 at nyu.edu> wrote:

> Hi Elaine,
> I made two different models in a single Chimera window and selected the N-terminal amino acid of one peptide and C-terminal amino acid of another. Then I ran the command Join mdoels, but it gives me the error. Can you please tell me what I am doing wrong here.
> I have attached screen shot of the window.
> Thanks,
> Haresh

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