- Chimera-users - RBVI Mailing Lists

Troubleshooting Docking Problem
by Alexandru Buhimschi 13 Feb '19

13 Feb '19

Hello- I have been trying to perform a docking search for small molecule binding to a B-DNA double helix (e.g. 1ZFH). Unfortunately, when I set up the ligand and receptor, I receive the following error: IndexError: list index out of range Receptor preparation for AutoDock Vina failed; please look in Reply Log to see error messages. cannot prepare receptor for AutoDock Vina; please look in Reply Log and/or run Chimera with --debug flag to see errors. I am not sure what I can do to address this, but I have tried multiple DNA structures and the result appears to be the same. I have also encountered this error which I could not resolve either: ValueError: Could not find atomic number for Ha Ha > failed to prepare receptor for AutoDock Vina; please look in Reply Log to see errors. Please let me know if there is anything I should do to address this issue. Best, Alex

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Measure unmodeled density
by Chen Sun 13 Feb '19

13 Feb '19

Dear Chimera users, I have a map with extra density in it and I'd like to know the volume of the extra density. So is there an existing command in Chimera that can measure the volume of unmodeled density? Best regards, Chen Chen Sun Department of Biological Sciences Purdue University Hockmeyer Hall of Structural Biology 240 S.Martin Jischke Dr. West Lafayette, IN 47907 "The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts. --Bertrand Russell"

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Volume Viewer Planes
by Michael Elbaum 12 Feb '19

12 Feb '19

Hi. Here's an issue regarding the use of "Planes" in the Volume Viewer, not really a proper bug but often an inconvenience. When I choose a subset of Planes there is obviously some calculation, and the calculation has to be redone when I move the slider. For a large volume this can be very slow, especially for Surface rendering. If I use the number box to save time, the calculation updates for each change "instantaneously", meaning slowly. For example if I want to move from 110 to 85, the calculation updates for 11, 1, 8, and 85. I think it would be more efficient to wait for an Enter, or even just to add a delay of 2-3 seconds. I hope you can consider this in future versions. thanks, Michael

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Linking structure to Multialign viewer
by Ahmad Khalifa 12 Feb '19

12 Feb '19

I have multiple copies of the same structure open. How to link specific chains of model IDs to Multialign viewer, to be able to highlight sequence of the residues I select? Thanks.

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using a surface as a mask for a volume
by Michael Elbaum 11 Feb '19

11 Feb '19

Hi. I have a volume (EM tomography data) which I display together with a surface. I'd like to use that surface to mask away the volume elements that lie outside the surface boundary. Is it possible to define and display a restricted region this way? It's similar to Segment Map but without the segmentation step. thanks, Michael

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Does UCSF Chimera support RTX 2080 Ti?
by Jun Ha Song 11 Feb '19

11 Feb '19

Dear RBVI, I am currently deciding which graphic card to upgrade to, and I wonder if UCSF Chimera support RTX2080Ti. Would there be any bugs due to graphic cards being RTX? Best, Junha.

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Hello chimera my name is Alberto, I would like to know if there is any way to see the double bonds in the structures.
by Alberto garcia lopez 11 Feb '19

11 Feb '19

Enviado desde Correo<https://go.microsoft.com/fwlink/?LinkId=550986> para Windows 10

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Strange and inconsistent Chimera behavior recently on W7/Nvidia OS
by Boaz Shaanan 08 Feb '19

08 Feb '19

Hi, I started to have strange and inconsistent behavior of chimera when I open PDB's. My system is W7 with Nvidia 840M graphics card (which has been functioning fine for nearly 3 years). I am running the latest daily build but noticed this strange behavior with previous versions as well as the production one. I attach 3 snip pictures, the first two are of pdb files opened, one OK (as usual) and the other distorted. The 3rd snip pictures is of the Nvidia debug when I start Chimera in command file as chimera.exe --debug-opengl. It became quite a lottery for me as for how pdb file will open. The .py files open OK so far as I recall. Please help me with this recent mystery. Thanks, Boaz Boaz Shaanan, Ph.D. Dept. of Life Sciences Ben-Gurion University of the Negev Beer-Sheva 84105 Israel E-mail: bshaanan(a)bgu.ac.il Phone: 972-8-647-2220 Fax: 972-8-647-2992 or 972-8-646-1710

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Question
by Vito Calderone 07 Feb '19

07 Feb '19

I have superposed two structures and printed the attached figure with sequence superposition and Ca RMSD. Is there a list of residue by residue RMSD as well? I can’t find it anywhere apparently. Thanks Vito

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Running vina locally
by Sam Freeman-Fox 06 Feb '19

06 Feb '19

Hi, I am looking at running docking simulations locally, and see that with the vina command line execution (*vina* *docking* *receptor* *recmodel* <frameatom_spec.html> *ligand* *ligmodel* <frameatom_spec.html> *options <#options>) *one of the available options is to change the backend from using the Opal web service to a local executable. Could you advise on where I would be able to download such a local executable in order to get this to run. Many Thanks, Sam Freeman

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