[Chimera-users] changing chain ID

Elaine Meng meng at cgl.ucsf.edu
Fri Apr 29 10:01:54 PDT 2011

Just to be more clear, there isn't a simple way to change chain ID using Chimera.  If that is all you wanted to do, you could text-edit the PDB file yourself, or this web server may be able to do it:



On Apr 29, 2011, at 9:49 AM, Elaine Meng wrote:

> Hi Francesco,
> If they are already called chain A and B, you can split the chains in one model to make separate models using the command "split":
> <http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/split.html>
> For example, if your structure with chains A and B is open as model 0, command:
> split #0
> ... will make two models, model #0.1 with chain A and #0.2 with chain B.  Even though they are still both #0 you can refer to them separately as #0.1 and #0.2, move them separately, etc.
> However, if they are currently both chain A, that will not do anything.  To make separate models, you would have to open the receptor+ligand structure two times and in one copy, delete the ligand, and in the other copy, delete the receptor.  Alternatively, you could manually text-edit the PDB file so make the ligand chain B before opening it in Chimera, and then use the "split" method.
> I hope this helps,
> Elaine
> -----
> Elaine C. Meng, Ph.D.                       
> UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
> Department of Pharmaceutical Chemistry
> University of California, San Francisco
> On Apr 29, 2011, at 3:55 AM, Francesco Burresi wrote:
>> Hi,
>> I've docked a ligand with a receptor and I get a pdb with1 chain (chain A)
>> I'd like to separate recpetor-ligand in two different chians (chain A e chain B).
>> How can I do that in Chimera? 
>> regards
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