Hi Elaine, Thanks for letting me know. I can use the rmsd command you mention. Best wishes, Reza Reza Khayat, PhD Associate Professor City College of New York Department of Chemistry and Biochemistry New York, NY 10031 ________________________________________ From: Elaine Meng <meng@cgl.ucsf.edu> Sent: Thursday, May 12, 2022 6:46 PM To: Reza Khayat Cc: Chimera-users BB Subject: Re: [Chimera-users] [EXTERNAL] Re: RMSF calculations Hi Reza, Sorry, this approach in Chimera or ChimeraX only works with protein or nucleic acid chains, where the sequence alignment can be displayed in a separate window. Both Chimera and ChimeraX have an "rmsd" command to calculate RMSD between any two sets of atoms (any types of molecules) in their current positions, without moving them to fit. However, it only works pairwise, not among multiple structures, so you could only get the RMSD between two structures, not among more than two. Best, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco
On May 12, 2022, at 2:15 PM, Reza Khayat via Chimera-users <chimera-users@cgl.ucsf.edu> wrote:
Hi Elaine and Eric,
I was unaware that ChimeraX did this. I now have a script for ChimeraX; however, I have the problem of wanting to calculate the RMSF for non-standard residues (glycans). The sequence chain command does not extract the glycan sequence. Is it possible to calculate the RMSF of glycans with ChimeraX? Thanks.
Best wishes, reza
Reza Khayat, PhD Associate Professor City College of New York Department of Chemistry and Biochemistry New York, NY 10031 From: Eric Pettersen <pett@cgl.ucsf.edu> Sent: Thursday, May 12, 2022 12:50 PM To: Reza Khayat Cc: chimera-users@cgl.ucsf.edu Subject: [EXTERNAL] Re: [Chimera-users] RMSF calculations
Hi Reza, As Elaine said, this may be simpler in ChimeraX. Nonetheless, if you have a fasta file (or equivalent) with your sequence in it, all members of the ensemble should automatically associate with the sequence when you open it. Nonetheless, the remaining steps (showing RMSD header, saving attributes file) do not have command equivalents and would require resorting to some moderately difficult Python code. I don’t know if you’d prefer to do that or switch this to ChimeraX where it’s more directly supported. I can provide guidance on the former if you really want to stick with Chimera for some reason.
--Eric
Eric Pettersen UCSF Computer Graphics Lab
On May 12, 2022, at 7:40 AM, Reza Khayat via Chimera-users <chimera-users@cgl.ucsf.edu> wrote:
Hi,
I'm trying to write a script to perform the procedure described here:
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.cgl.ucsf.edu_piperm...
Can someone help with the command line syntax for associating a structure with a defined sequence? Thanks.
Best wishes, Reza
Reza Khayat, PhD Associate Professor City College of New York Department of Chemistry and Biochemistry New York, NY 10031 _______________________________________________ Chimera-users mailing list: Chimera-users@cgl.ucsf.edu Manage subscription: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.rbvi.ucsf.edu_mailm...
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