- ChimeraX-users - RBVI Mailing Lists

ChimeraX docked panels
by Tom Goddard 06 Sep '22

06 Sep '22

Hi Hernando, ChimeraX panels can be docked into the main window or can float freely. I agree the behavior is pretty annoying when you are trying to move a free floating panel like the AlphaFold pane and it accidentally docks it. Panels can be told not to dock -- you right click on a blank space on the tool and it shows a popup menu with an entry "Dockable Tool" and you uncheck that. Unfortunately the AlphaFold Run pane is a web browser and it takes over the right click popup so it doesn't have that menu entry. But you can make the AlphaFold Run panel not dockable with this command ui dockable false "AlphaFold Run" This will be remembered for all future sessions so you only would need to do it once. I'll look at making that the default setting for the AlphaFold Run panel. I figured out that command by right clicking on another panel and unchecking "Dockable Tool" and it logs the command that does it in the Log panel. A useful feature of docking panels is they can be stacked on top of each other as tabs. This can help save screen space. The docking system is provided by the Qt window toolkit that ChimeraX uses -- we did not write it. I am not sure if it is a blessing or curse, some of both. Tom > On Sep 4, 2022, at 7:59 AM, Hernando J Sosa <hernando.sosa(a)einsteinmed.edu> wrote: > > By the way I find a bit disconcerting the way ChimeraX arranges the windows. For example, when the new window with the Alphafold run is hovered a bit over the ChimeraX window, ChimeraX grabs it and all windows inside ChimeraX gets rearranged. It takes a while to put things back the way they were. Is there a button to reset the windows display ? Perhaps like other programs that have a view menu ? > > Thanks again > > Best > > Hernando > > ___________________________________ > Hernando Sosa > Dept. of Biochemistry > Albert Einstein College of Medicine > 1300 Morris Park Av. > Bronx NY 10461 > phone (718) 430-3456 > emai: hernando.sosa@einsteinmed. <mailto:hernando.sosa@einsteinmed.org>edu > ___________________________________ > > > From: Tom Goddard <goddard(a)sonic.net <mailto:goddard@sonic.net>> > Sent: Friday, September 2, 2022 5:17 PM > To: Hernando J Sosa <hernando.sosa(a)einsteinmed.edu <mailto:hernando.sosa@einsteinmed.edu>> > Cc: chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu> <chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu>> > Subject: Re: [chimerax-users] AlphaFold > > CAUTION: This email comes from an external source; the attachments and/or links may compromise our secure environment. Do not open or click on suspicious emails. Please click on the “Phish Alert” button on the top right of the Outlook dashboard to report any suspicious emails. > Hi Hernando, > > I have not seen that problem. Does that always happen when you run an AlphaFold prediction? What operating system are you on? Mac? I have seen Mac ask for permission to download from a web site the first time you download from that site. It may be that the browser in ChimeraX showing the Alphafold run does not know how to ask. But it doesn't make much sense because I do not observe this. Another idea -- if your machine is sleeping when the job finishes maybe Google Colab gives up trying to download the results to your machine. If it is sleeping you might want to set your machine not to sleep during the run. This can also be important to avoid Google Colab dropping your job entirely due to inactivity. I guess another possibility is that it could be a firewall problem where your network firewall blocks the download. Since the download seems to succeed for most users, there seems to be something specific about your computer setup that causes the problem. > > At any rate, to get the results you should be able to click on Files in the left column of the AlphaFold google colab panel and among the files you should see results.zip which is what ChimeraX downloads when the job finishes. There should be a vertical "..." if hover over that file that pops up a menu that allows you to download the file. Try that. ChimeraX is receiving the download and putting it in ~/Downloads/ChimeraX/AlphaFold/prediction_N. It may also hang if there is some issue that prevents the downloads. Possibly you could connect to Google Colab through a standard web browser and try downloading the results.zip file and maybe you would at least get an error that would help diagnose the problem. > > Tom > > >> On Sep 2, 2022, at 1:26 PM, Hernando J Sosa via ChimeraX-users <chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu>> wrote: >> >> Dear Chimera/ChimeraX, >> >> I've been running Alphafold through UCSF ChimeraX and sometimes the procedure gets stuck indefinitely at the last step, downloading the results files (see screenshot). Is this a known issue? is there a workaround ? >> >> Thanks >> >> Hernando >> >> <image.png> >> _______________________________________________ >> ChimeraX-users mailing list >> ChimeraX-users(a)cgl.ucsf.edu <mailto:ChimeraX-users@cgl.ucsf.edu> >> Manage subscription: >> https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rbvi.…>

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Re: [chimerax-users] AlphaFold predictions
by Tom Goddard 06 Sep '22

06 Sep '22

Hi Hernando, It is hard to explain how a 400 residue AlphaFold prediction downloads automatically, but a 1500 residue prediction hangs downloading. It only downloads once the job finishes. But that is a bit suspicious because I have never seen Google Colab succeed with 1500 residues. The GPUs it offers are just too old, even with Colab Pro (which is what I use) -- I only get GPUs with 16 GB memory that can handle about 1200 residues -- larger runs don't have enough GPU memory. Here are some test runs of AlphaFold prediction on Google Colab Nvidia P100 (16 GB) and on a desktop PC Nvidia RTX 3090 (24 GB) and on a server Nvidia A40 (48 GB). The A40 can handle over 3000 residues. https://www.rbvi.ucsf.edu/chimerax/data/alphafold-jan2022/afspeed.html <https://www.rbvi.ucsf.edu/chimerax/data/alphafold-jan2022/afspeed.html> I think your download problem is a Google Colab issue. Unfortunately Google Colab is an erratic service, although the price (free) is right. Tom > On Sep 4, 2022, at 6:51 AM, Hernando J Sosa <hernando.sosa(a)einsteinmed.edu> wrote: > > Thanks Tom, > > I've run successfully other predictions but of smaller sequences (~400 residues). This happened with a larger but not huge complex ( ~1500 residues total). I've tried others runs but they crashed with an error message saying that RAM was insufficient, even though the goggle account was upgraded to pro (not pro+). > > I am using a windows 10 computer and it was not in screen saving mode, but I was using the multiple desktop feature. It is likely that when the run finished the desktop with chimera and the google colab window was not the one that was on display. Would this be an issue ?? > > Best > > Hernando > > ___________________________________ > Hernando Sosa > Dept. of Biochemistry > Albert Einstein College of Medicine > 1300 Morris Park Av. > Bronx NY 10461 > phone (718) 430-3456 > emai: hernando.sosa@einsteinmed. <mailto:hernando.sosa@einsteinmed.org>edu > ___________________________________ > > > From: Tom Goddard <goddard(a)sonic.net <mailto:goddard@sonic.net>> > Sent: Friday, September 2, 2022 5:17 PM > To: Hernando J Sosa <hernando.sosa(a)einsteinmed.edu <mailto:hernando.sosa@einsteinmed.edu>> > Cc: chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu> <chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu>> > Subject: Re: [chimerax-users] AlphaFold > > CAUTION: This email comes from an external source; the attachments and/or links may compromise our secure environment. Do not open or click on suspicious emails. Please click on the “Phish Alert” button on the top right of the Outlook dashboard to report any suspicious emails. > Hi Hernando, > > I have not seen that problem. Does that always happen when you run an AlphaFold prediction? What operating system are you on? Mac? I have seen Mac ask for permission to download from a web site the first time you download from that site. It may be that the browser in ChimeraX showing the Alphafold run does not know how to ask. But it doesn't make much sense because I do not observe this. Another idea -- if your machine is sleeping when the job finishes maybe Google Colab gives up trying to download the results to your machine. If it is sleeping you might want to set your machine not to sleep during the run. This can also be important to avoid Google Colab dropping your job entirely due to inactivity. I guess another possibility is that it could be a firewall problem where your network firewall blocks the download. Since the download seems to succeed for most users, there seems to be something specific about your computer setup that causes the problem. > > At any rate, to get the results you should be able to click on Files in the left column of the AlphaFold google colab panel and among the files you should see results.zip which is what ChimeraX downloads when the job finishes. There should be a vertical "..." if hover over that file that pops up a menu that allows you to download the file. Try that. ChimeraX is receiving the download and putting it in ~/Downloads/ChimeraX/AlphaFold/prediction_N. It may also hang if there is some issue that prevents the downloads. Possibly you could connect to Google Colab through a standard web browser and try downloading the results.zip file and maybe you would at least get an error that would help diagnose the problem. > > Tom > > >> On Sep 2, 2022, at 1:26 PM, Hernando J Sosa via ChimeraX-users <chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu>> wrote: >> >> Dear Chimera/ChimeraX, >> >> I've been running Alphafold through UCSF ChimeraX and sometimes the procedure gets stuck indefinitely at the last step, downloading the results files (see screenshot). Is this a known issue? is there a workaround ? >> >> Thanks >> >> Hernando >> >> <image.png> >> _______________________________________________ >> ChimeraX-users mailing list >> ChimeraX-users(a)cgl.ucsf.edu <mailto:ChimeraX-users@cgl.ucsf.edu> >> Manage subscription: >> https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rbvi.…>

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protonation of small molecule
by Enrico Martinez 05 Sep '22

05 Sep '22

Dear ChimeraX users! I need to protonate a small molecule from the input pdb file producing another pdb with the protonated ligand. I use the following batch script: open 'ligand_without_H.pdb' addh hbond false save ligand_with_H.pdb displayedOnly true exit Depending on the complexity of the input 3D structure of the ligand some protons could not be added so the final protonation state is not correct. Is there a possible way to fix this issue? Many thanks in advance Enrico

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AlphaFold
by Hernando J Sosa 02 Sep '22

02 Sep '22

Dear Chimera/ChimeraX, I've been running Alphafold through UCSF ChimeraX and sometimes the procedure gets stuck indefinitely at the last step, downloading the results files (see screenshot). Is this a known issue? is there a workaround ? Thanks Hernando [cid:fec1a7e2-7922-44b8-b86e-eb2401cd211c]

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What to do if chimerax encounters a problem that cannot be opened？
by 胡玉霞 01 Sep '22

01 Sep '22

Greetings. Thank you for the great work you have done for ChimeraX development to meet the research needs of the majority of researchers. Recently, I have encountered a problem with the ChimeraX, when I open the software I have the following prompt and then the software does not work properly. So I would like to ask if there is an update for ChimeraX (the version I am using is macChimeraX-1.4.dmg, my computer system is macOS Monterey 12.1) or if I need to download the appropriate plugins and where can I download the plugins? Thanks for reading the email and I look forward to hearing from you. Yuxia Hu Fudan University

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Proposal to an add on
by Noriega, Heather 31 Aug '22

31 Aug '22

Hello, I hope everyone is doing well. I know I have asked this before about the molmaps and have been trying to work around the "holes", in order to create a solid map for the inner volume calculation. It works very well with the AAVs, however with the other subfamilies because of their larger pores it makes it to where it is an inconsistent volume contour, and I believe it throws off the inner volume calculations. I propose to add an element to only cover the pores as a means to make the contour thinner to create a more realistic inner volume calculation. I would like to help with this feature, as my skills have improved within the last year since I first started using Chimera and ChimeraX for my project. I am unsure how I go about this and your response. I have reached out before and most of the time it ends in maybe trying another software. There is no other software that is remotely comparable to this molmap feature that is as user-friendly as it is in ChimeraX. I would really like to continue the use of ChimeraX. I have also thought of possibly trying to create a way for the molecular surface to work with the volume blob feature, but it still comes down to the pores creating the holes. A mechanism to create a feature of only covering the pores could be useful for not only my project but others that may have similar issues. Please let me know what your thoughts are as I would like to contribute to this resolution, but would also need some direction on how to start it. Thank you and I hope to hear from you soon. Thank you, Heather Noriega PhD-Pharmaceutical Science student Howard University heather.noriega(a)bison.howard.edu 520-203-1883

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Displaying the main chain of residues
by Diksha Parwana 31 Aug '22

31 Aug '22

Hello, I want to display the main chain as well as the side chain of my selected residues. The main chain is only displayed when I use the hide cartoon feature. Is there some way I can see the backbone of my residues without deleting the chain as I don't want to break the continuity? I want to study both backbone and side chain interactions of my residues. Please let me know if there's a way. I'll highly appreciate it. Thanks & regards,

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Help with Zone features
by Binh Nguyen 31 Aug '22

31 Aug '22

Dear ChimeraX developers, Would you please show me how to make this following figure? [cid:01baf593-38aa-4ef0-8392-146a9fb2e78d] I have learned that this is a feature in zone feature and probably solvent accessible surface, but I do not know how to make it. Any hint is much appreciated. Warm regards, B _____________________________________________ Binh A. Nguyen, Ph.D. @ Saelices's Lab Center for Alzheimer’s and Neurodegenerative Diseases Peter O’Donnell Jr. Brain Institute UT Southwestern Medical Center ________________________________ UT Southwestern Medical Center The future of medicine, today.

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Color atoms by kdHydrophobicity
by Daniel Gurnon 30 Aug '22

30 Aug '22

Hi all, I use Chimera mostly for teaching purposes, and while Chimera X is definitely more user friendly for students, there are occasionally things I like from the legacy version that I can't find on a menu in the new program. One such feature is "Render by attribute". While the mlp command can create a lipophilicity surface, when I teach protein folding I like to have students visualize all atoms, with residues colored by kdHydrophobicity. Is there a simple way to implement this? Thanks Dan ____________________________ Daniel Gurnon, Ph. D. Associate Professor of Chemistry and Biochemistry DePauw University Greencastle, IN 46135

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Moving/aligning/ modifying the model
by Dmitry Semchonok 30 Aug '22

30 Aug '22

Dear colleagues, Is there a way I can move(rotate) the chain/residue within a model in ChimeraX? If yes, then how? Thank you in advance. Kind regards, Dmitry

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