Hi Tom, Thanks a lot for adding this to the request database. Resfit works so nicely on protein cryoEM data. Hopefully I can use it on nucleic acid in the future. Thanks again, Winston -----Original Message----- From: Tom Goddard [mailto:goddard@sonic.net] Sent: Wednesday, July 28, 2021 12:13 AM To: Wen-Jin Winston Wu <winston@gate.sinica.edu.tw> Cc: ChimeraX Users Help <chimerax-users@cgl.ucsf.edu> Subject: Re: [chimerax-users] resfit command for nuclei acid Hi Winston, Yes, the resfit command only works on proteins and requires the N,CA,C backbone atoms to align each residue in the view in a standard orientation. I added to our feature request database making resfit work on nucleic acids https://www.rbvi.ucsf.edu/trac/ChimeraX/ticket/4961 Tom

On Jul 27, 2021, at 6:17 AM, Wen-Jin Winston Wu via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Hi Tom,

I have just tried to use the "resfit" command ChimeraX Does the nice command of "resfit" in ChimeraX support inspection on nuclei acid? It seems that it only support protein residues as with the command " resfit #1/D:DT map #3", it returned with the message that "None of the 9 specified residues have backbone atoms N, CA and C".

I have not checked out the daily build version yet, but thought that I can ask first.

Thanks,

Best wishes,

Winston

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