[chimerax-users] Chains with symbol ID such as % and $ cause errors

[Ahmad Khalifa]

Hi Elaine,

The chain IDs were assigned by Coot. Perhaps Paul or some Coot people can
give some input regarding that.

Regards.

On Wed, Jan 8, 2020 at 12:26 PM Elaine Meng <meng at cgl.ucsf.edu> wrote:

> Hi Ahmad,
> Those special characters are not allowed as chain IDs. It is not just a
> Chimera(X) requirement, but part of the PDB/mmCIF format description, for
> example described in:
>
> <https://www.wwpdb.org/deposition/preparing-pdbx-mmcif-files>
>
> "Each polymer chain must have a unique chain ID. Permissible characters
> are uppercase letters A-Z, lowercase letters a-z, and numbers 0-9. PDB
> format allows only single-character chain IDs, while PDBx/mmCIF can
> accommodate chain IDs of up to four characters.”
>
> I hope this helps,
> Elaine
> -----
> Elaine C. Meng, Ph.D.
> UCSF Chimera(X) team
> Department of Pharmaceutical Chemistry
> University of California, San Francisco
>
> > On Jan 8, 2020, at 8:11 AM, Ahmad Khalifa <underoath006 at gmail.com>
> wrote:
> >
> > I can do "show #2/m cartoons" for a chain with ID m, but for a chain
> with ID % or $, I get:
> >
> > show #2/% cartoons
> > Expected a collection of one of 'atoms', 'bonds', 'cartoons', 'models',
> 'pbonds', 'pseudobonds', 'ribbons', or 'surfaces' or a keyword
>
>
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