- ChimeraX-users - RBVI Mailing Lists

no distinguishing between capital and non-captital chain IDs in morph
by Haselbach, David 16 Oct '17

16 Oct '17

Hi everyone, I am using morph with same true to interpolate between two models. Unfortunately the models have each so many chains that there are capital and non capital letters used. The problem I have is, if I want to color the chains in the morph result I cant distinguish between capital and non capital chain ids anymore. So if I do "color #10/R green" not only chain R gets green but also chain r. I guess this is a bug. But is there a workaround? Best David

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mini info
by Bruno Villoutreix 02 Oct '17

02 Oct '17

Dear Colleagues do you think chimeraX could run on mac el capitan (10.11) or it requires the version above ? many thanks Bruno -- Dr. Bruno Villoutreix, PhD Structural Bioinformatics-Molecular Medicine, Chemoinformatics DR1 Inserm Head Inserm-Paris 7 Unit U973 Therapeutic molecules in silico (MTi) Inserm U973 - Lamarck Building 35 rue Helene Brion 75013 PARIS In silico tools and databases and more in my updated website : http://www.vls3d.com <http://www.vls3d.com/>

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Feature Request: Named selections
by Jared Adolf-Bryfogle 15 Sep '17

15 Sep '17

Hi All! I just started playing around with the alpha, and I’m very happy with it so far! Really love to windows and the ability to easily select models. One thing that is missing is a similar list of selections (yes, ala PyMol). I find these to be extremely useful in a long running session and I was wondering if something like that is planned. It would be similar to the model window, where you could control each selection and maybe apply view controls to each selection as well - like having components that are cartoon and others stick, etc. Thanks for any info! Sincerely, -Jared Jared Adolf-Bryfogle, Ph.D. Research Associate Lab of Dr. William Schief The Scripps Research Institute

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Fitmap enhancements?
by Oliver Clarke 14 Sep '17

14 Sep '17

Hi, fitmap can currently sequentially fit different models, but it would be really handy if fitmap could also sequentially fit parts of an individual model (in a single fitmap command). It would be great for a quick fit of a large complex if there was an `eachChain` and maybe `eachSegment` command, to sequentially fit each chain or each contiguous stretch of polypeptide. `eachSelection` would also be useful, allowing the user to give a list of atom selections for sequential fitting in fitmap. Cheers Oli

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Color palettes - ColorBrewer support?
by Oliver Clarke 12 Sep '17

12 Sep '17

Hi, I see in the help for the “rainbow” command that there is an option for web-fetched palettes – any chance for integrating support for ColorBrewer ( http://colorbrewer2.org/#)? It has different very well-designed palettes for sequential (e.g. color by residue) divergent (e.g. color by charge or hydrophobicity) and qualitative (e.g. color by chain) data, and they are designed to be colorblind-safe etc. It’s intended for cartography, but I have manually used their palettes for structural biology with pleasing results – the full set of palettes can be downloaded as JSON or in an excel spreadsheet. Cheers Oli

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Re: [chimerax-users] [Chimera-users] 3D-SNFG symbol representation for carbohydrate molecules
by Eric Pettersen 06 Sep '17

06 Sep '17

Hi Oliver, We discussed this at the meeting today and the upshot is that we are very interested in doing this, but it will take us awhile to get to it. We intend to make a beta release of ChimeraX by the end of the year and there’s a lot of work to get done between then and now. Part of that work is to implement the “Nucleotides” representation that you see in regular Chimera but that isn’t yet available in ChimeraX. The “alternative atom depiction” that Nucleotides provides requires much of the same underlying support that showing the alternative carbohydrate depictions will require. Implementing Nucleotides first will allow us to iron out the issues involved in supplying that support and debug it. That will make implementing the 3D-SNFG representation much faster and improve its reliability. So we hope to be able to provide the carbohydrate depictions not long after the beta release date. I’d like to provide something faster, but as a practical matter I think this is the best we can do. I’m sure we will have questions about the details once we get onto the implementation, and hope you won’t mind if need to bug you a bit. :-) —Eric Eric Pettersen UCSF Computer Graphics Lab > On Aug 31, 2017, at 4:22 PM, Eric Pettersen <pett(a)cgl.ucsf.edu> wrote: > > Dear Dr. Grant, > We are definitely interested, though we would be more likely to implement it in ChimeraX than Chimera, since most of our new work is in ChimeraX and also ChimeraX has better underlying support for adding new depictions like this. We will discuss this in a meeting on Tuesday and get back to you with further details. > > —Eric > > Eric Pettersen > UCSF Computer Graphics Lab > >> On Aug 31, 2017, at 7:18 AM, Oliver Grant <olivercgrant(a)gmail.com <mailto:olivercgrant@gmail.com>> wrote: >> >> Dear developers, >> >> The carbohydrate community has decided on a standard symbol representation for carbohydrates. The article is here <https://academic.oup.com/glycob/article-lookup/doi/10.1093/glycob/cwv091>, and the webpage is here <https://www.ncbi.nlm.nih.gov/books/NBK310273/>. Our group has created a 3D version <http://glycam.org/docs/othertoolsservice/2016/06/03/3d-symbol-nomenclature-…> of the symbols within the software VMD. Here's a video showing both versions. <http://glycam.org/docs/othertoolsservice/wp-content/uploads/sites/15/2016/0…> We have also worked with David Sehnal to implement this into LiteMol, here is an example <https://webchemdev.ncbr.muni.cz/LiteMol/Viewer/?loadFromCS=5a6z>. I wanted to reach out and see if you are interested to implement this representation within Chimera? We can discuss the details if so. >> >> Regards, >> >> Dr. Oliver Grant >> Associate Research Scientist >> Complex Carbohydrate Research Center >> Athens, GA, USA. >> >> _______________________________________________ >> Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu <mailto:Chimera-users@cgl.ucsf.edu> >> Manage subscription: http://www.rbvi.ucsf.edu/mailman/listinfo/chimera-users <http://www.rbvi.ucsf.edu/mailman/listinfo/chimera-users> > > _______________________________________________ > Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu > Manage subscription: http://www.rbvi.ucsf.edu/mailman/listinfo/chimera-users

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Not a software whiz!!!!!!!!!
by Arthur Szabo 05 Sep '17

05 Sep '17

Have downloaded ChimeraX as I would like to include a ribosome structure or part of it in my work. ChimeraX is, I am aware, largely a command based operational process. I feel like a real dummy because I do not understand how to achieve the imagery that I would like I have been able to open PDB 4WPO can rotate it and similar things, and there seem to be two molecules in the unit cell. I stumbled on a list of all the proteins, rRNAs and some other components in the structure such as EFG, an elongation factor. Can't figure out how to delete one of the model units from the image, as I was able to do with Chimera. I find it virtually impossible to understand the logic of the commands. Of course the command structure is similar to that in Chimera, but I only used that infrequently. I used the menu driven tools etc almost exclusively. I could achieve what I wanted with them and the learning curve was quite tolerable. Then when I got stuck I received excellent advice from Chimera staff on how to use the commands when needed. For example color spec<atomspec.html> colorname general-options What is the designation or meaning of spec ? How would I select the EGF protein from the ribosome to color it. 4wpo #1, chain DZ: 50S ribosomal protein L9,Elongation factor G. 4WPO is the pdb number, #1, I believe to one of the two units in the model. Chain DZ refers to the protein. I tried several permutations of this information and only received error messages. color<help:user/commands/color.html> 4wpo #1, chain BZ: 50S ribosomal protein L9,Elongation factor G Expected a color or one of 'byatom', 'bychain', 'byelement', 'byhetero', 'bymodel', 'bypolymer', 'fromatoms', or 'random' or a keyword color<help:user/commands/color.html> red 4wpo #1, chain BZ: 50S ribosomal protein L9,Elongation factor G Expected one of 'atoms', 'bonds', 'cartoons', 'pseudobonds', 'ribbons', or 'surfaces' or a keyword color<help:user/commands/color.html> ribbons red 4wpo #1, chain BZ: 50S ribosomal protein L9,Elongation factor G Expected a color or one of 'byatom', 'bychain', 'byelement', 'byhetero', 'bymodel', 'bypolymer', 'fromatoms', or 'random' or a keyword color<help:user/commands/color.html> ribbons red 4wpo #1, chain BZ Expected a color or one of 'byatom', 'bychain', 'byelement', 'byhetero', 'bymodel', 'bypolymer', 'fromatoms', or 'random' or a keyword Colorname I think I understand, and I think that I have found a log of the different colors. Have no idea of what general-options might refer to. Here is more of my log. show<help:user/commands/show.html> selAtoms ribbons help<help:user/commands/help.html> help:user select<help:user/commands/select.html> 4wpo #1, chain BZ Expected an objects specifier or a keyword help<help:user/commands/help.html> help:contact.html help<help:user/commands/help.html> help:contact.html color<help:user/commands/color.html> #1 BZ red Expected a color or one of 'byatom', 'bychain', 'byelement', 'byhetero', 'bymodel', 'bypolymer', 'fromatoms', or 'random' or a keyword Similarly I can't understand what the terms in select spec<atomspec.html> [ polymer chain-spec<atomspec.html> ] might mean. The learning curve will be very much steeper than that for Chimera. Please allow me to make a suggestion. It would be useful to have a list with the definition of the terms used in the commands with clear examples. One example is spec another would be ref-spec or general-options I couldn't find one if it was there. These are only a few examples. Such terms are not defined anywhere. The persons most familiar with them are the persons who have written the programs, and those who have used the programs extensively. Some things like ( cartoon | ribbon ) atom-spec<atomspec.html> [ smooth factor | default ] [ suppressBackboneDisplay true | false ] appear to be well explained but again atom-spec is not defined nor an example given at least none that I could find. Kindly consider my comments as questions and friendly suggestions. I downloaded Pymol the other day, and couldn't get to first base. Would have to take a course on how to use it. I removed it from my computer. I don't have the time to learn even the basics about Pymol, and there are no clear explanations anywhere. I assume students learn from their colleagues who have spent considerable time learning the nuances of the program. I have a similar view of Photoshop - huge learning curve. Maybe an interactive course on YouTube video might be useful for ChimeraX Regards And thanks. AGS

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Re: [chimerax-users] Color protein by residue
by Elaine Meng 29 Aug '17

29 Aug '17

Hi Tom, Could you say more about what you mean about “collaborative” in terms of VR, what program(s) you used, how you controlled the display (e.g. typed commands to color and show/hide or something else like menus in the VR or voice control) or and whether you were looking at atomic details of proteins or just overall structures? (If you don’t want to send that info to the whole list, can just e-mail me individually.) For the most part, what we’ve done with ChimeraX is described here: <http://www.cgl.ucsf.edu/home/meng/chimerax/docs/user/vr.html> Best, Elaine ---------- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco > > Hi Elaine, > > Wow, your .cxc file works perfectly. Thanks for showing me how to do this, great help. > > On the VR stuff, yes, I’ve been using the VR on/off with our HTC Vive system. Works great if you keep the lighting effect simple. It is why I was suggesting your team take a look at what is possible in an immersive collaboration VR environment. I look forward to hearing from someone on your team. > > Best, and again thanks, > Tom >

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Color protein by residue
by Tom Skillman 28 Aug '17

28 Aug '17

I can’t figure out the command for coloring the proteins of a protein with standard colors.. Can you help? Thx. ________________________________ --CONFIDENTIALITY NOTICE--: The information contained in this email is intended for the exclusive use of the addressee and may contain confidential information. If you are not the intended recipient, you are hereby notified that any form of dissemination of this communication is strictly prohibited. www.benaroyaresearch.org

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Re: [chimerax-users] 4D imaging - metadata and time slider
by Mateusz Biesaga 23 Aug '17

23 Aug '17

Hi all, I use ChimeraX for 4D visualization and so far I am very satisfied with the results, thank you for this amazing tool! I have a two questions: - While presenting data that changes in time (xyt or xyzt as I do in Chimera) it is usually required to display the timing on the image. Is there a way to access the metadata and display it, possibly using 2dlabels function? I work particularly with TIFF files. - After I upgraded Chimera to second alpha release, I can see no time slider above the command line. I open my 4D data using asterisk in the filename, as described in tutorial: http://www.rbvi.ucsf.edu/chimera/data/light-apr2017/light4d.html Is there a new way of accessing this slider? Thanks, Mateusz

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