Thanks Elaine! It works!

Best,

Jiaxuan

From: Elaine Meng <meng@cgl.ucsf.edu>
Date: Sunday, May 14, 2023 at 12:24 PM
To: Cheng, Jiaxuan (NIH/VRC) [F] <jiaxuan.cheng@nih.gov>
Cc: chimerax-users@cgl.ucsf.edu <chimerax-users@cgl.ucsf.edu>
Subject: [EXTERNAL] Re: [chimerax-users] Measuring distance between two atoms in a single protein

Hi Jiaxuan,
I don't know where you are looking that suggests you can use "at" -- instead to indicate atom name it is the @ symbol.

The command would instead be something like

distance #1.16/B:94@CA  #1.35/B:94@CA

How to write atom-specs in the command line is described in this page:
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Frbvi.ucsf.edu%2Fchimerax%2Fdocs%2Fuser%2Fcommands%2Fatomspec.html&data=05%7C01%7Cjiaxuan.cheng%40nih.gov%7C30c1708112bc4941f25e08db5497ac53%7C14b77578977342d58507251ca2dc2b06%7C0%7C0%7C638196782642531483%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=om6G40SkXMocuH5HWsY5YPtMA0oOc5oLeC8FCxsLyl8%3D&reserved=0>

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


> On May 12, 2023, at 9:19 PM, Cheng, Jiaxuan (NIH/VRC) [F] via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
>
> Hi Elaine,
>
>   I met a problem when measuring the distance between two atoms. I entered “distance #1.16/B:94 at CA  #1.35/B:94 at CA” , but the ChimeraX reports “expected a keyword”. Could you let me know how to solve it?
>
> Thanks!
> Jiaxuan
>
> <image001.png>

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