October 2021 - ChimeraX-users - RBVI Mailing Lists

I Have a Problem Installing ChimeraX on Debian Buster
by Stephen P. Molnar 20 Oct '21

20 Oct '21

I am attempting the installation of ChimeraC-1.2.5(chimerax-1.2.5-rc-2021.05.24) on my up to date Debian v-1064 bit platform. I open the tar.gz package without any difficulties, but when I attempt to execute ChmieraX i get the following: comp@AbNormal:~/Apps/chimerax-1.2.5-rc-2021.05.24/bin$ ./ChimeraX qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb. Fatal Python error: Aborted Current thread 0x00007fcb3dafd740 (most recent call first): File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/chimerax/ui/gui.py", line 157 in __init__ File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 577 in init File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 1015 in <module> File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 87 in _run_code File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 194 in _run_module_as_main Aborted comp@AbNormal:~/Apps/chimerax-1.2.5-rc-2021.05.24/bin$ xcb is installed, but the Debian v-10 default version of python is 3.7. Is this the problem? Is there a solution? Reinstalling did not fix the problem. Thanks in advance. -- Stephen P. Molnar, Ph.D. www.molecular-modeling.net 614.312.7528 (c) Skype: smolnar1

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Remote Desktop usage
by Dmitry Semchonok 20 Oct '21

20 Oct '21

Dear colleagues, What could be the solution for the remote desktop of Chimera X user? One of the solution can be VNC but is there any other? Thank you Sincerely, Dmitry

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coil thickness
by Lisandro Otero 18 Oct '21

18 Oct '21

Dear Chimera developer; How can I change the coil thickness in a specific loop in ChimeraX? I have tried with the Hierarchical Specifiers but I was unsuccessful? Could you please give me a command line as example? I'm using “cartoon style coil thickness XX” Thanks in advance. Best. Dr. Lisandro H. Otero PhD. Leloir Institute Foundation Av. Patricias Argentinas 435 C1405BWE Buenos Aires, Argentina Phone: +054-11-5238-7500 ext. 2552 Fax: +054-11-5238-7501

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Feature suggestion - Models panel
by William Hofsøy 18 Oct '21

18 Oct '21

Hi, I would like to suggest/request that the "Models" panel should be able to rename models and change their ids from the list of models directly either through double click, like changing file names on windows, or through the right click context menu. Best regards, William

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Re: [chimerax-users] labelling hbond atoms
by Rangarajan, Amith 14 Oct '21

14 Oct '21

Dear Group, I have a possibly rookie level question. When i use name flag with hbonds command to define two groups of hbonds like this hbonds (#1.1 & protein) restrict (#1.2.* ) distslop .2 reveal t rad .2 color gold name HBONDS-1 hbonds(#1.1 & ~protein) restrict(#1.2.*) distslop .2 reveal t rad .2 color magenta name HBONDS-2 then when i try to label the hbond atoms , la hbondatoms residues font "Rockwell Extra Bold" height .6 bg 20,20,20 I am not getting the labels. I am not getting any errors so i figured that it got to do with hbonds being given a name , however i am not able to fix this. welcome to hear your suggestions. thanks again., amith

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ProblemI am attempting he installation of ChmimeraX Installing ChimeraX on Debian mv-10
by Stephen P. Molnar 14 Oct '21

14 Oct '21

I am attempting the installation of ChimeraC-1.2.5(chimerax-1.2.5-rc-2021.05.24) on my up to date Debian v-1064 bit platform. I open the tar.gz package without any difficulties, but when I attempt to execute ChmieraX i get the following: comp@AbNormal:~/Apps/chimerax-1.2.5-rc-2021.05.24/bin$ ./ChimeraX qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb. Fatal Python error: Aborted Current thread 0x00007fcb3dafd740 (most recent call first): File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/chimerax/ui/gui.py", line 157 in __init__ File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 577 in init File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 1015 in <module> File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 87 in _run_code File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 194 in _run_module_as_main Aborted comp@AbNormal:~/Apps/chimerax-1.2.5-rc-2021.05.24/bin$ xcb is installed, but the Debian v-10 default version of python is 3.7. Is this the problem? Is there a solution? Reinstalling did not fix the problem. Thanks in advance. -- Stephen P. Molnar, Ph.D. www.molecular-modeling.net 614.312.7528 (c) Skype: smolnar1

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Question about pruned set in rmsd
by Chang Jang 14 Oct '21

14 Oct '21

Hi Chimera Users, I want to understand a result from "match" command. There are two results for 1) pruned set and 2) across all. What exactly is the pruned set in this calculation? Thanks, Chang Woon Jang

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Use values printed from Log inside a script (e.g. RMSD)
by Steven Truong 12 Oct '21

12 Oct '21

Dear ChimeraX Admins, I was hoping to use the “rmsd” command in ChimeraX to measure distances between models within a .py script. Is there a way to use the output of “rmsd” (or generally any other output in Log) within the script? For example, if rmsd > 2 Angstroms, then do X. Ultimately, I am attempting to align chains between models. Because my protein is asymmetric, chain A on Model #1 might actually be chain B on Model #2. I was hoping to use “rmsd” to map one chain to the other. Is it a better idea to do this in another program and re-write chain IDs in the .PDB file? If so, what other program would be better at making RMSD calculations between .PDB chains? Thank you, Steven Truong Cambridge University

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Electrostatic color key problem
by Luca Pellegrini 12 Oct '21

12 Oct '21

Hi, Coloring a surface with ‘electrostatic’ in the ‘Molecule display’ works fine. However, when I try to modify the red-blue boundary values from the default -10, 10 in the color key box, the surface color doesn’t seem to change. Can you please advise? Best wishes, Luca Luca Pellegrini, PhD Department of Biochemistry University of Cambridge Cambridge CB2 1GA UK

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fold
by Ruggero Gabbrielli 11 Oct '21

11 Oct '21

Maybe it’s a little too early for that, but can’t you just add a button for folding a sequence?

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