[Chimera-users] Reassign chain ID letters

[Elaine Meng]

Hi Ahmad,
Sorry, there is no option to reassign chain IDs randomly.  There is a “changechains” command and a “Change Chain IDs” GUI where you have to specify the current chain ID and the new chain ID:

<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/changechains.html>
<http://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/editing/changechains.html>

Actually, Chimera may not even understand number chain IDs, but I don’t have an example to try right now.  The documentation currently says that chain IDs are alphabetical characters.
<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/frameatom_spec.html>

Best,
Elaine
-----
Elaine C. Meng, Ph.D.
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Oct 21, 2019, at 9:40 AM, Ahmad Khalifa <underoath006 at gmail.com> wrote:
> 
> Hello,
> 
> I have a structure with multiple chain IDs, some of them include number chain IDs and same letter small case and capital case chain IDs.
> 
> I want to reassign the chain ID's randomly so that they are letters first then numbers, capital case then small case. How can I do that?! 
> 
> Best regards.