- Chimera-users - RBVI Mailing Lists

Modeller function and MD function in Chimera 1.14
by ‍성열승(대학원학생/일반대학원 약학과) 18 Jun '20

18 Jun '20

Daer whom it may concern, Hello, I am a graduate student trying out several features in Chimera for structure prediction. I write to you due to repeated problem during my use of Chimera function. I currently made a slight alteration in one residue of my protein. I have named it as a another residue, other than an amino acid. Then, I tried going to Modeller function so that the program will predict some energetic difference resulting in a structural modification. However, whenever the function ends, my helices and beta sheets are all converted into loop regions.Therefore, I only selected the loop region of my protein and made it go through the Modeller. Now, the modification was only shown in the loop area, but my alteration in an amino acid residue has been cut off. The residue was nowhere to be seen. I guess the Modeller made it go away. Next I tried selecting all the loop regions except the residue that I made the change and started Modeller, hoping that the altered residue will not be cut off. However, I got a result of it getting cut off again. Overall my question could be summed up into the following three: 1. Is there any way making Modeller function to have my altered residue not changed but have the program go through? 2. Is there a way for refining my protein in the helices and beta sheets area? Modeller function seem to change all of those into loops, and showed excellent prediction in the loop region. 3. Do you recommend any other function for my purpose? I built a PTM residue into one of my amino acid and want to see some predicted structure alteration. Thank you so much for your time. I really think the Chimera software is awesome and I just need to get used to it and try to learn some tricks. I hope to hear from you soon. Yours sincerely, Yulseung Sung -- 성열승 연세대학교 약학대학 암대사연구실 (Yulseung SUNG) (Lab of Cancer Metabolism, College of Pharmacy, Yonsei University) 연세대학교 약학대학 인천광역시 연수구 송도과학로85, 연세대학교 국제캠퍼스 진리관D 317-3호, 암대사연구실 College of Pharmacy, Yonsei University 317-3 Veritas D, 85 Songdogwahak-ro, Yeonsu-gu, Inchoen, 406-840, South Korea

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Managing window visibility through scripts?
by Martti Tolvanen 05 Jun '20

05 Jun '20

Hi, I have made scripts in which various models are rendered by mavConservation taken from different alignments. As the scripts proceed, the multialignment viewer windows remain at the front, and I haven't been able to figure out how to bring the main molecular graphics window back to the front (except by clicking). I am aware that the problem would go away if I made the whole thing into a movie, but I would like to run the script in our research group meeting and leave the displayed models available for manual rotations. Are there commands to bring windows behind or in front of other Chimera windows? I run the production version of Chimera 1.14 under Windows 7. Part of my code follows. #single chains of ca6, ca9, ca12, and ca14 as #0-3, superimposed by mmaker, and their copies as #4-7 tile #0-7 columns 4 range kdHydrophobicity min cyan 0 white max maroon novalue green #0-3 open ca6.fasta range mavConservation 0.1 dodger blue 0.55 white 1 orange red novalue green #4 open ca9.fasta range mavConservation 0.1 dodger blue 0.55 white 1 orange red novalue green #5 open ca12.fasta range mavConservation 0.1 dodger blue 0.55 white 1 orange red novalue green #6 open ca14.fasta range mavConservation 0.1 dodger blue 0.55 white 1 orange red novalue green #7 surface #0-7 & protein Cheers, -Martti -- Martti Tolvanen Lecturer in Bioinformatics U of Turku, Finland

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Bottom menu is super small
by h k 04 Jun '20

04 Jun '20

Dear Sir/Madam, I have installed *Chimera-1.14-win64.exe* on my laptop (Windows 10) in order to work on the protein structures. The structures look good, but the bottom menu is super tiny as I can’t see the buttons there at all ! Please look at the following picture (red arrow on that) and let me know how can I solve this issue? I tried different compatibilities by changing High DPI Scaling Override. In this way, I can increase the size of bottom menu but it adversely affect the quality (resolution) of protein structure images! Please help me with this issue. Thank you, Haniyeh [image: image.png]

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Multifit waiting too long for Opal server response
by André Graça 04 Jun '20

04 Jun '20

Hi, I am using Multifit for the first time and wondering if a few hours are not long enough to wait for a server response. The task panel shows from the beginning the status as 'waiting for response from Opal server'. I read on the paper (2011) about Multifit that "The typical running time is about 20 min for assemblies with tens of thousands of atoms", which is the case. I wonder if it is not running yet and it is queued in the server, or if it takes a long time depending on anything that I might have set up wrongly. Could anyone help me to figure this out? Thank you, André Graça

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How to know the cut-off used in ensemble cluster?
by Ibrahim Mohamed 01 Jun '20

01 Jun '20

i am using MD movie to cluster my Molecular Dynamics results. how can i know the cut-off used by chimera to do this? i know that it depends on the data itself, but how can i know this cut-off for specific data? Thanks

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Need instructions how to do MD simulations of Protein-ligand complex using Chimera
by P Srivastava 01 Jun '20

01 Jun '20

Dear Chimera Team I Need instructions on how to do MD simulations of Protein-ligand complex using Chimera. Please give me in details. With regards, Pratibha Srivastava प्रतिभा श्रीवास्तव Scientist वैज्ञानिक Bioprospecting Group जैव पूर्वेक्षण समूह Agharkar Research Institute आघारकर अनुसंधान संस्थान Pune, India पुणे, भारत

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(no subject)
by Preantha Poonan 01 Jun '20

01 Jun '20

Good afternoon, I am writing to you regarding an error I am experiencing with working with Chimera. When I begin the docking process the following appears: Service 'opal:vina_1.1.2 is unavailable . See Reply Log for more details. Kindly assist. Preantha Poonan Sent from Mail for Windows 10

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Conversion of Chimera session .py file to Pymol .pse file
by Joanna Smietanska 01 Jun '20

01 Jun '20

Dear UMSF Chimera Users, I would like to ask how to convert Chimera session .py file into .pse Pymol format? I have a few saved Chimera sessions, my approach was to save protein coordinates in .pdb format and subsequently read them in Pymol 2.0 to save as Pymol session, but during this procedure all informations about specific colouring of chains and other settings are lost. May I ask about possibilities for direct import Chimera .py files into Pymol without losing saved settings? I would be very grateful for any help and advice. Best regards, Joanna Smietanska

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Molecular dynamics
by Сергей Владимиров 01 Jun '20

01 Jun '20

Good day! My name is Sergei Vladimirov, I'm a student at Moscow State University. As far as I know, when running a molecular dynamics of ligand-protein interaction one must use different force fields to the ligand and the protein. There is a mm14ff to calculate interactions within a protein but there are only two different force fields to calculate interactions within a ligand. I've been led into believing that the best ff for small organic ligands is GAFF. So my question is, is there any way to implement the GAFF force field into the production of molecular dynamics? Is there anything I'm missing? I will be awaiting your reply. Best regards, Sergei Vladimirov.

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CHIMERA code in R
by Farzaneh Amanpour 27 May '20

27 May '20

Dear CHIMERA users, I am a PhD student in biostatistics and I want to run this algorithm in R. Can I have access to R code for CHIMERA? Thank you in advance

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Molecular docking
by Schaf, Judith (2017) 27 May '20

27 May '20

Hi everybody, I have a quick question: when I analyse the results of a molecular docking assay (performed with SwissDock) on Chimera I sometimes see a green line between the protein and the ligand. Does someone know what this line represents? [cid:fc8bd8ab-4117-464a-b2fb-0f512e867f88] Thank you, Judith

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Re: [Chimera-users] Adding New Covalent Bond?
by Elaine Meng 26 May '20

26 May '20

> On May 26, 2020, at 9:52 AM, Ammar Jastaniah <ajasta2(a)uic.edu> wrote: > > Hi Elaine, > Is there any way to connect/make new bonds between adjacent, somewhat distant carbon atoms within a ligand structure (perhaps still using the 'Build Structure' feature)? > Thank you. > Ammar Hi Ammar, Assuming this is a Chimera question (we are now developing ChimeraX) the answer is yes, in the Adjust Bonds section of Build Structure, you can choose to add a bond between any two selected atoms regardless of the distance between them. Just choose the "all possible" option. <http://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/editing/editing.h…> Or, you could use the "bond" command: <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/bond.html> The chimera-users(a)cgl.ucsf.edu address (CC'd here) is recommended for Chimera questions, unless private data are included. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

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save images/scene - independent of chimera window
by Dominique Gutierrez 26 May '20

26 May '20

Good Morning, Is there a way to save an image independent of the chimera window size. When I reopened a saved session and saved an image from a scene it was not the same and it seems to be due to change in the chimera window. Best Regards. Dominique Gutierrez

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Color by electrostatic potential
by Francesco Pietra 22 May '20

22 May '20

I was able to open with chimera 1.1.3.1 (linux) electrostatic-potential cube files generated from ORCA package and view them in colors (red lowest, blue highest potential). I can't remember how I succeeded and now, from chimera help, I am no more able. Only a single color. Thanks for putting me on the right way. chiendarret

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Load AMBER trajectory from command line?
by Rodrigo Galindo-Murillo 20 May '20

20 May '20

Hello! I wonder if there is a way to load an AMBER topology/trajectory directly from the command line without having to go to tools->Md/ensemble-> MD movie, etc... For example, in VMD you can use: vmd -parm7 topology.parm7 -netcdf trajectory.nc I am NOT implying VMD is better than Chimera :) It will be just faster to be able to quickly load trajectories from the command line to save some time. Thanks! Rodrigo.

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opening maps into an open session by clicking file in folder
by Dominique Gutierrez 19 May '20

19 May '20

Hello, I used to be able to open a map from any folder by clicking the file into an open chimera session but now it either opens in a separate chimera session or not at all. Is there a way to fix that? Best, Dominique

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Comparing 2 similar structures
by Dmitry A. Semchonok 19 May '20

19 May '20

Dear colleagues, I want to compare 2 models that have some differences: the same subunits but repositioned, missing structures, etc. Is there a tool in Chimera that can: - Make a list of structure A (all components/residues). A list of elements in Structure B. - Compare and report the missing parts in structure B compared to structure A? Maybe also the differences in distances between the same helices in structure B compared to structure A? Thank you! Sincerely, Dmitry

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Relative exposure of amino acids
by agnek54＠gmail.com 18 May '20

18 May '20

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Renumbering/reordering a session
by Dominique Gutierrez 16 May '20

16 May '20

Hello, Is there any way to renumber maps in a session so subsequent maps open together and in order instead of replacing the numbers of maps removed from the session? Best, Dominique

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Unable to install
by Nadun Chanaka Karunatilleke R Wasala Mudiyanselage Vihare 15 May '20

15 May '20

Hi, I'm trying to install Chimera to my new mac & unable to do so. There's a message appears as "chimera can't be opened because Apple cannot check it for malicious software. This software needs to be updated. Contact the developer for more information." Can anyone suggest how i proceed from my side or do the program really needs any update? Thank you Nadun Nadun Karunatilleke Ph.D Candidate Dr. James Choy's Lab Department of Biochemistry Schulich School of Medicine & Dentistry The University of Western Ontario London, Ontario, Canada N6A 5C1

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Chimera download
by Chalmers, Gordon Richard 14 May '20

14 May '20

Hi, Is there a way to simply use sudo apt-get install to get Chimera on my linux laptop? Much appreciated. Chimera may not be in the repository. Gordon Chalmers Center for Biotechnology and Interdisciplinary Studies (CBIS) Rensselaer Polytechnic Institute (RPI) Room 3235

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Clear Reply Log
by Colin K Deniston 13 May '20

13 May '20

Hello, I am running a script through chimera which is looping jobs and is attempting to pull info from the reply log after each run. I need some way to clear the reply log between iterations so it doesn't pull info from a previous run. Is there any command to do this? I've tried replyobj.clearReplyStack() but it seems to be causing strange errors. Thanks. Colin Deniston UCSD Graduate Student Chemistry and Biochemistry Department

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HELP
by 501244924 12 May '20

12 May '20

I have some problems with chimera. I would like to ask you.When I open a gro file with chimera, it always shows that it is being opened, but it just won't open.Then, after I opened the PDB file, want to use the Find Clashes/Contacts function, click to Designate button but no response, asked a lot of the others didn't get a reply.This makes me very distressed. I am looking forward to your answer to my question. Thank you!My system is WIN7.

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Re: [Chimera-users] measure rotation
by Tom Goddard 12 May '20

12 May '20

If you provide a Chimera session in a bug report it is pretty trivial for me to see what the problem is since I can look at the exact positioning matrices. Otherwise there is not enough information to help you. Tom > On May 12, 2020, at 9:41 AM, Jesse M. Hansen <jhansen6(a)uw.edu> wrote: > > hi, > > I have usually opened the PDB then "combine #1" to duplicate the PDB, then move it and fit into the map. > > I just tried your suggestion of oepning the PDB twice and moving the second copy into the adjacent position. It gives the same result. > > I've attached a screenshot this time. On the top is my current attempt with a new map and model, and on the bottom is one of my previous maps and models which failed miserably. > > I've considered the the protomers are not perfectly aligned in the helical axis, giving a super helical twist. I have seen this in the past where I end up with a slightly off-center axis, but still pretty close to the center. However in this case I used "measure distance" from several parts of the two protomers and I see they are indeed parallel and perfectly along the axis. Yet still the "measure rotation" axis is way outside the helix (bottom of attached image). > > Baffling. Is there any other suggestion for how I might measure rotation? > > thanks! > > Jesse > From: Tom Goddard <goddard(a)sonic.net> > Sent: Monday, May 11, 2020 3:46 PM > To: Jesse M. Hansen <jhansen6(a)uw.edu> > Cc: chimera-users(a)cgl.ucsf.edu BB <chimera-users(a)cgl.ucsf.edu>; Elaine Meng <meng(a)cgl.ucsf.edu> > Subject: Re: [Chimera-users] measure rotation > > Hi Jesse, > > It sounds like you are using "measure rotation" correctly. The only way for us to figure out your case would be for you to send us a session file. Use Chimera Help / Report a Bug... and attach a session file that has your two subunits where "measure rotation" gives a completely unreasonable result. My guess would be that "measure rotation" is working, and I am suspicious that "clone the subunit" is giving you a second subunit with a different coordinate system. You might explain how you "clone the subunit" -- is it just opening a second copy of a PDB? > > Tom > > > >> On May 11, 2020, at 2:56 PM, Jesse M. Hansen <jhansen6(a)uw.edu <mailto:jhansen6@uw.edu>> wrote: >> >> hi Elaine >> >> thanks for your response. >> >> Yes I think I am using the command correctly. Sometimes it works but other times it doesn't, so there is clearly something I am missing. It seems arbitrary why it works sometimes and not others, and then why the axis seems to be positioned near my protein or other times about 50 protein lengths away. It's baffling. >> >> But yes my protein is helical, so imagine you have actin. I load the map and the model for 1 subunit. I then clone the subunit and fit it into the adjacent position then ask what the rotation is between those two models. As I said it sometimes works, but not always. Just wondering what it is I could be doing wrong. I alway position the model in the center of the box, I try loading model or map first to see if results vary. Nothing seems to help. Why does the axis appear way off to the side in some cases? >> >> thanks again >> >> From: Elaine Meng <meng(a)cgl.ucsf.edu <mailto:meng@cgl.ucsf.edu>> >> Sent: Monday, May 11, 2020 2:23 PM >> To: Jesse M. Hansen <jhansen6(a)uw.edu <mailto:jhansen6@uw.edu>> >> Cc: chimera-users(a)cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu> <chimera-users(a)cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu>> >> Subject: Re: [Chimera-users] measure rotation >> >> Hi Jesse, >> I'm not sure, but it *might* be a misunderstanding of what this command does. >> >> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/measure.html#rotation <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/measure.html#rotation>> >> >> This command does not evaluate how to best fit or match the two models. It reports the current rotation and translation between the coordinate systems of the two models, which would be zero unless one model was moved relative to the other, either manually or with some other tool or command such as Fit in Map, match, or matchmaker. (Moving everything collectively, such as rotating or zooming to get a better view, does not change the positions of models relative to each other.) >> >> Centering just moves the view and doesn't change the coordinates of the structure. >> >> Imagine you have two copies of the protein, one before fitting and one after fitting. Is the rotation between the two really around an axis that falls inside the protein? >> >> I may have misapprehended the situation, but this command is commonly misunderstood. >> Elaine >> ----- >> Elaine C. Meng, Ph.D. >> UCSF Chimera(X) team >> Department of Pharmaceutical Chemistry >> University of California, San Francisco >> >> >> >> >> > On May 8, 2020, at 3:38 PM, Jesse M. Hansen <jhansen6(a)uw.edu <mailto:jhansen6@uw.edu>> wrote: >> > >> > hi >> > >> > I repeatedly have this issue and no idea how to fix it. I send the same files to colleague and they cannot reproduce it. We cannot figure out whether it's some minor detail I am doing, or it's my version of chimera. >> > >> > When I try "measure rotation #1 #2" the axis ends up either pretty off center or WAY far away (like 20 protein widths away). >> > >> > have tried: >> > • centering volume and resaving, fitting models into map and resaving. Opening and all looks correct. >> > • tried opening pdb first then maps, or maps first then pdb. Both seem to give different results but neither are precisely down the actual axis of my helical protein despite having centered it. >> > • adding "coordinateSystem #" to the command has no effect. The axis that appears is now as long as my box, but it's still not centered >> > >> > thanks >> > Jesse >> > _______________________________________________ >> > Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu <mailto:Chimera-users@cgl.ucsf.edu> >> > Manage subscription: https://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users <https://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users> >> >> _______________________________________________ >> Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu <mailto:Chimera-users@cgl.ucsf.edu> >> Manage subscription: https://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users <https://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users> > <rotation.png>

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problems with animation recording
by Alice Pawlowski 12 May '20

12 May '20

Hello, I want to produce a little animation of my structure model in mp4 format. I followed the instrcution in the you tube movie ( https://www.youtube.com/watch?v=Ephu9EpgRQg ) part 1 and part 2 that were very well explained. I recorded my animation but no movie was created. There is only an empty screen when playing the mp4 file. Right after recording a windows opens with a command line instead of the produced movie as it should happen according to the video (https://www.youtube.com/watch?v=8PgbDXbEBvw) I am just a user without any experience in programming. I would appreciate any good advice how to solve the problem. It would be great to have an animation for powerpoint presentations etc Looking forward to hearing from you Kind regards Alice ----------------------- Alice Pawlowski Heinrich-Heine-Universität Düsseldorf Institut für Synthetische Mikrobiologie Gebäude 22.07, Postbox 005 Raum 00.063 Universitätsstr. 1 40225 Düsseldorf Tel.: +49 (0)211 81-10362 alice.pawlowski(a)hhu.de

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How to save a dragged pdb
by 李雄俊 12 May '20

12 May '20

Hello: I  dragged a partial thread pdb to dock a volume map with UCSF-Chemira, but when I saved the pdb, and open the new pdb and the mrc file, they are still uncouple. Please point out the mistakes in my method, thank you very much. fig 1. Yellow chain is the partial thread pdb, pink one is native pdb, grey one is the volume data. fig 2. After dragging, docked pdb and volume data   Fig 3. options of 'save pdb' After these actions, pdb and mrc are still uncouple when I reopen them in another Chemira.   

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Regarding saving a file
by Yash Bahl 11 May '20

11 May '20

Hi, I did a docking experiment from autodock and downloaded the file in chimerax format, when I open it works great and I select the model with highest delta G and visaulise it, but when I save the model as PDB, and open it in pymol only ligand is visible when I open the protein file in the same, although the ligand sits perfectly. I am not able to get a PDB file of the docked structure for ligplot analysis. Any help would be appreciated. Take care Sincerely, Yash Bahl

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Question about minimizing molecule with non-standard amino acids
by Sheng Zhang 11 May '20

11 May '20

Dear UCSF Chimera team, Good morning! I am Sheng Zhang, a graduate student from UC Irvine. First I would like to thank you for developing this useful tool, UCSF Chimera. I have a question regarding minimizing molecule with non-standard amino acids. I modified a linear peptide ligand so it's now a ring containing non-standard amino acids. When I was trying to minimize the ligand while fixing its protein partner, I kept getting error messages like "failure running ANTECHAMBER for residue UNK+THR". The unknown and threonine residues happen to be the residues that I built and modified. Now they are no longer standard/intact amino acid residues and I guess that is why Chimera doesn't like them when trying to minimize the structure. I wonder is there a way to minimize ligand with non-standard amino acid groups? Thank you so much for your time and help! Best wishes, Sheng

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measure rotation
by Jesse M. Hansen 11 May '20

11 May '20

hi I repeatedly have this issue and no idea how to fix it. I send the same files to colleague and they cannot reproduce it. We cannot figure out whether it's some minor detail I am doing, or it's my version of chimera. When I try "measure rotation #1 #2" the axis ends up either pretty off center or WAY far away (like 20 protein widths away). have tried: * centering volume and resaving, fitting models into map and resaving. Opening and all looks correct. * tried opening pdb first then maps, or maps first then pdb. Both seem to give different results but neither are precisely down the actual axis of my helical protein despite having centered it. * adding "coordinateSystem #" to the command has no effect. The axis that appears is now as long as my box, but it's still not centered thanks Jesse

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Re: [Chimera-users] How to save a pdb which moved by mouse
by Elaine Meng 11 May '20

11 May '20

On May 11, 2020, at 8:55 AM, 李雄俊 <lixiongjun(a)mail.sysu.edu.cn> wrote: > > Hello Dr Meng: > > I tried to dock a partial thread pdb file to a mrc file with UCSF-Chimera,as the tutorial recommanded，I clicked "Favorites ——> Model Panel",and inactivated mrc, and then dragged the pdb to dock the volume data. But I found that I cannot save this moved pdb, I mean, even though I save the pdb in a new file, when I open this file in Chemira, it shows that the pdb still be the original position, didn't move anywhere. If I want to change it's position, I need use "Tools/Movement/Transform Coodinates" to get a really moved pdb, but I cannot get precise displacement parameters, Could you please help me to solve this problem: How to save a dragged pdb's coordinates? Thank you very much. Hello, You can of course save a dragged PDB in its new location. Just make sure that when you save it, you save it "relative to" the map model. There is a choice for that in the File... Save PDB dialog. <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/savemodel.html#pdb> The chimera-users(a)cgl.ucsf.edu address (CC'd here) is recommended for asking questions, to ensure you get an answer. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

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problems opening multiple pdb files
by Domenico Raimondo 08 May '20

08 May '20

Hi, I am using chimera on a Mac (10.15.4 verison). My problem is that every time I open a pdb file with a double click it opens it in a new window of chiemera. In this way I cannot have multiple pdb structures in a single chimera window using the double click method to open the files. Thanks. Domenico Raimondo. -- ________________________________________________________ Le informazioni contenute in questo messaggio di posta elettronica sono strettamente riservate e indirizzate esclusivamente al destinatario. Si prega di non leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non si è il legittimo destinatario dello stesso. Qualora tale messaggio sia stato ricevuto per errore, si prega di restituirlo al mittente e di cancellarlo permanentemente dal proprio computer. The information contained in this e mail message is strictly confidential and intended for the use of the addressee only. If you are not the intended recipient, please do not read, copy, forward or store it on your computer. If you have received the message in error, please forward it back to the sender and delete it permanently from your computer system.

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ChimeraX on Twitter
by Tom Goddard 08 May '20

08 May '20

For ChimeraX news, tips, tricks and special features meet us on Twitter @UCSFChimeraX. https://twitter.com/UCSFChimeraX <https://twitter.com/UCSFChimeraX> Tom, Eric, Elaine, Greg, Conrad, Scooter, Tom -- the UCSF ChimeraX team.

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Question about vop maximum
by Reyhan Muhammad 08 May '20

08 May '20

Dear Chimera Users, I am new to Chimera and cryoEM. For my project, I would like to create a single map (which will be used as a mask) for six 3D classes. To achieve that, I have aligned all my six maps using Chimera 'Fit in Map' and used vop maximum (vop maximum #0,#1,#2,#3,#4,#5) to generate a new map that is supposed to 'cover' all the other maps. My question is, when I look at the vop output map (green map in the file attachment), why do we still see some densities from input maps (salmon color) outside the vop output map? I have also adjusted the contour level of all map to 0.04 (volume all step 1 level 0.04). I hope someone could help me to clarify my understanding of vop maximum. Thank you for your help. Best wishes, Reyhan <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -- This message and its contents, including attachments are intended solely for the original recipient. If you are not the intended recipient or have received this message in error, please notify me immediately and delete this message from your computer system. Any unauthorized use or distribution is prohibited. Please consider the environment before printing this email.

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Conformation Search in Chimera
by Maj Krumberger 07 May '20

07 May '20

Hello, We are currently developing an educational exercise in Chimera for building different inhibitors in different proteases, using Chimera and then using AutoDock Vina for finding potential docking sites. I was wondering if there is a function in Chimera for doing a conformational search that we could do to find the lowest energy conformer before running AutoDock Vina? Thank you, Maj Krumberger Graduate Student - Nowick Group Department of Chemistry maj.krumberger(a)uci.edu University of California, Irvine 4302 Natural Sciences I Irvine, CA 92697-2025

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MD simulation
by Александр Харченко 06 May '20

06 May '20

Good afternoon, dear Chimera team! My name is Dr. Pavlo V. Zadorozhnii I am trying to simulate the molecular dynamics of a protein. Started with a simple tripeptide RGD, but I have a number of problems: 1) after starting the energy minimization, the molecular dynamics simulation starts automatically, I can't do it step by step; 2) as soon as the conugate gradient minimazation step is started, the structure of the RGD tripeptide disappears; 3) after the calculation, the structure of the tripeptide does not appear and I can not analyze the data. All graphs and charts are blank. I used Chimera version 1.14. Print Screen is in the app. Please help me with the problem I have. Sincerely, Dr. Pavlo V. Zadorozhniy. -- реклама ----------------------------------------------------------- Поторопись зарегистрировать самый короткий почтовый адрес @i.ua https://mail.i.ua/reg - и получи 1Gb для хранения писем

2 1

Matching a small ligand to another
by Divjak Maja 05 May '20

05 May '20

Hi Elaine, Hope you're well! I'm trying to match a Lewis Y tetrasaccharide PubChem CID 71308612 to a partial Lewis Y ligand in PDB 3eyv. I'm having a whole world of trouble. I understand that you have to select at least three atoms in each molecule and they have to be the same atoms in the same order in each to do this. I've used the 'label' command to show the atom names and numbers on each molecule. I've tried shift + cntrl click to select the atoms manually and then the command 'match sel'. This gives me the error message 'At least one atom must be selected'. Not sure why this is happening. I also tried using the 'match' command, but I'm not sure what identifiers to use for the two molecules . The PubChem molecule is listed as (noID) under chains and the partial ligand in the PDB is part of chain H. So, if I want to use match #X c1, c2, c3, #Y c1, c3, c4 etc. I don't know how to identify the two molecules. Using match #noID and #H does not work. I'm using Chimera 1.13. Is it better if I convert to Chimera X please? Thanks so much and best wishes, Maja Dr Maja Divjak BAppSc(Hons), PhD, Grad Cert 3D Animation (AFTRS) Biomedical Animator Office of Cancer Research Phone +61 3 8559 5961 Email maja.divjak(a)petermac.org 305 Grattan Street Melbourne Victoria 3000 www.petermac.org Disclaimer: This email (including any attachments or links) may contain confidential and/or legally privileged information and is intended only to be read or used by the addressee. If you are not the intended addressee, any use, distribution, disclosure or copying of this email is strictly prohibited. Confidentiality and legal privilege attached to this email (including any attachments) are not waived or lost by reason of its mistaken delivery to you. If you have received this email in error, please delete it and notify us immediately by telephone or email. Peter MacCallum Cancer Centre provides no guarantee that this transmission is free of virus or that it has not been intercepted or altered and will not be liable for any delay in its receipt.

2 2

Questions regarding UCSF Chimera
by THEVASHREE A/P RAJANDERAN 04 May '20

04 May '20

Dear Sir/Madam/Mr./Ms./Mrs./Dr. I am Thevashree Rajanderan from Sunway University, Malaysia. I had been using UCSF Chimera for months now but recently i am unable to conducts works on this software. At first i was unable to conduct AutodockVina, but now my projects keeps on freezing during the minimization process. May i know whether the server is down or is there anything new that i must download to further support the system. Thanks and regards. "All students are issued with an iMail email account. This is the official method by which Sunway will communicate with you on a range of administrative and academic matters. When corresponding with Sunway via email, you must use your iMail email account. Using the iMail email account helps to ensure your identity and validity of the communication."

2 1

in the docking process this message appear and does not continue, opal:vina_1.1.2 unavailable what i should do
by Ahmed Tawfeek 04 May '20

04 May '20

Dear Professors and Doctors, I need the help I am trying to learn the work on chimera for the purpose of checking my compounds as organic chemist but i could not continue, because at the docking stage, the autodock vina does not work and this message appear, the message " opal:vina_1.1.2 unavailable" what is the solution Best Regards Ahmed Tawfik

3 4

AutoDock Vina web service down!
by Don Gabo 04 May '20

04 May '20

Yesterday I tried AutoDock Vina from the Chimera Tools with a desaturase I got, I usually use the website to perform the docking, but I got an error, I opened the Reply Log and the following message appeared: "NonChimeraError: Web service appears to be down. See Reply Log for more details. *Service 'opal:vina_1.1.2' is unavailable. See Reply Log for more details.* " I visited the AutoDock Vina page from Chimera and it says: "** Web service no longer available 4/30/2020 ** The NBCR web service has been retired. Without the web service, this Chimera tool will no longer work, except for the very few people using it to run a locally installed copy of Autodock Vina." How can I do my dockings with a locally installed copy of AutoDock Vina?, Does anyone know for another website that could be linked to Chimera? Thank you!! -- M.C Gabriel Salazar Robles Estudiante de Doctorado en Biotecnología en la UPAEP Profesor de asignatura en la Universidad Politécnica Metropolitana de puebla Cel/WhatsApp: 2228 33 54 58 Email: gabrielsrbio(a)gmail.com

1 0

chimera/coot coordinates way off
by Jesse M. Hansen 29 Apr '20

29 Apr '20

Hi all I am building a model in coot after aligning that model to my map in chimera. However when I open the PDB and map in coot I notice the two are not at all aligned. I have tried: * Open the map and pdb in chimera. Fit the pdb into map. Save PDB. * Open map/pdb in chimera (pdb fits map on load). Center map in box ("center" button in vol viewer"). Save map w/ new name. Fit PDB into map. Save PDB. Re-open and confirm that pdb fits map on load and that map is centered in box. * Opening PDB first in coot then MRC. Then vice versa. * Opening a "good" similar map and pdb in chimera that DO open together correctly in coot. Open my "bad" map which does not align. Fit the "bad" map into the "good" map and do vop resample. Save the map. Open it to confirm pdb fits map on load. * Open map/pdb in chimera (pdb fits map on load). Use "vop cover ..." and save the output (reduced) map. I really feel like I've tried a lot and am baffled as to why I can't get the pdb and mrc to load on the same coordinate system, despite having tens of other similar maps and PDBs that work just fine. Thanks in advance Jesse

3 2

Fwd: Make command-line text bigger
by Tom Goddard 29 Apr '20

29 Apr '20

Lothar uses the Chimera REST server to type Chimera commands in a web browser in the message below. Tom > Begin forwarded message: > > From: "Esser, Lothar (NIH/NCI) [E]" > Subject: RE: Make command-line text bigger > Date: April 29, 2020 at 10:32:30 AM PDT > To: Tom Goddard <goddard(a)sonic.net> > > > Hi, > First off, thanks for the alpha version. Transparency now works as expected – tested it on linux and windows 10. > The commandline console in windows may not be the type of unix terminal that allows a program to get standard in from. > However, I cobbled a simple html page with a big input line together and use chimera as REST server. That works well and I get the font as large as I need it thanks (in part) to the browser’s cntrl+/- functions. > > Thank you so much. > Have a great day. > Lothar > > > From: Tom Goddard > Sent: Tuesday, April 28, 2020 8:41 PM > To: Esser, Lothar (NIH/NCI) [E] > Cc: chimera-users(a)cgl.ucsf.edu BB <chimera-users(a)cgl.ucsf.edu> > Subject: Make command-line text bigger > > Hi Lothar, > > I don't know what problem you are encountering using ReadStdin on Windows. It may have something to do with Windows not allowing stdin/stdout for GUI apps. On Mac it seems to work, I include a little test of it below. But it looks like a horrible solution for your problem of small command-line text since it spews tons of output from the commands. > > I don't know of a way to increase the Chimera command-line text size. > > I often give presentations with ChimeraX (and in the past Chimera) where I want people to read the command-line text. But I also want them to be able to read the menu entries, the buttons I click, everything. And all those text items are about the same size. So what I do is make all the text bigger. I do this by simply lowering the display resolution. Maybe there is a better way on Windows, does Windows system settings allow you to increase all font sizes? > > Of course when you make text twice as big the user interface crowds out the graphics. But there is no way to have everything. > > Tom > > > > > goddard$ ~/bin/chimera > open 1a0m > CMD open 1a0m > #0, chain A: α-conotoxin [TYR15]-epi > > #0, chain B: α-conotoxin [TYR15]-epi > > 1a0m opened > > END > turn y 10 10 > CMD turn y 10 10 > > END > > > > > > On Apr 28, 2020, at 5:24 PM, Esser, Lothar (NIH/NCI) [E] wrote: > > > Hi, > > This is great. Thanks. Can I ask you one quick question ? > I developed a presentation of chimera features on my Linux computer but have to use a Window10 laptop for a webex session. While I was able (with some effort) to run chimera from the Command Prompt Console, I cannot get the Tools->Utilities->ReadStdin to work. Is this expected ? Is there a workaround? The reason for that is that I want to show the commands in large fonts for people to read. The usual Chimera Command line has a very small font.... can that be configured to use a large font ? > > Thanks, > Lothar > > -----Original Message-----

1 0

Make command-line text bigger
by Tom Goddard 28 Apr '20

28 Apr '20

Hi Lothar, I don't know what problem you are encountering using ReadStdin on Windows. It may have something to do with Windows not allowing stdin/stdout for GUI apps. On Mac it seems to work, I include a little test of it below. But it looks like a horrible solution for your problem of small command-line text since it spews tons of output from the commands. I don't know of a way to increase the Chimera command-line text size. I often give presentations with ChimeraX (and in the past Chimera) where I want people to read the command-line text. But I also want them to be able to read the menu entries, the buttons I click, everything. And all those text items are about the same size. So what I do is make all the text bigger. I do this by simply lowering the display resolution. Maybe there is a better way on Windows, does Windows system settings allow you to increase all font sizes? Of course when you make text twice as big the user interface crowds out the graphics. But there is no way to have everything. Tom goddard$ ~/bin/chimera open 1a0m CMD open 1a0m #0, chain A: α-conotoxin [TYR15]-epi #0, chain B: α-conotoxin [TYR15]-epi 1a0m opened END turn y 10 10 CMD turn y 10 10 END > On Apr 28, 2020, at 5:24 PM, Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> wrote: > > > Hi, > > This is great. Thanks. Can I ask you one quick question ? > I developed a presentation of chimera features on my Linux computer but have to use a Window10 laptop for a webex session. While I was able (with some effort) to run chimera from the Command Prompt Console, I cannot get the Tools->Utilities->ReadStdin to work. Is this expected ? Is there a workaround? The reason for that is that I want to show the commands in large fonts for people to read. The usual Chimera Command line has a very small font.... can that be configured to use a large font ? > > Thanks, > Lothar > > -----Original Message----- > From: Tom Goddard <goddard(a)sonic.net> > Sent: Tuesday, April 28, 2020 2:14 PM > To: chimera-users(a)cgl.ucsf.edu BB <chimera-users(a)cgl.ucsf.edu> > Cc: Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> > Subject: Re: [Chimera-users] Surfaces and transparency > > The transparency command should work on a custom colored surface. As Lothar points out the Actions / Surface / Transparency menu does work. This was a bug in the transparency command. I fixed it. Will be in tonight's Chimera builds. > > Tom > > >> On Apr 28, 2020, at 9:05 AM, Elaine Meng <meng(a)cgl.ucsf.edu> wrote: >> >> I can only guess that you colored the surface by zone at some point, turning it into a custom-colored surface. If you don't do any zone coloring or other custom coloring by vertex (e.g. electrostatic potential), I expect the transparency to work, regardless of whether you used surfcat. >> Elaine >> >> >>> On Apr 28, 2020, at 8:28 AM, Elaine Meng <meng(a)cgl.ucsf.edu> wrote: >>> >>> Hi Lothar, >>> It is as expected because zone coloring is custom coloring by vertex. If you use zone coloring you have to make the atom colors transparent first, as you said. >>> >>> If you don't use zone coloring but simply specify colors by chains directly, the transparency will work, as in your example. >>>> color col_chain_A #0:.A >>>> Etc. >>> >>> >>> I don't know what's going on when you can't recolor because it works for me both using the surface category as the specification, as in the first set of example commands below, or using different specifications, as in the second set of example commands below. I can color the chain and the surface as many times as I want, or even specify only the atoms, or ribbon, or surface: >>> >>> open 1zik >>> surfcat cata :.a >>> surfcat catb :.b >>> surf cata >>> surf catb >>> trans 50,s >>> color green cata >>> color white,s cata >>> color red,r cata >>> ... >>> >>> It also works to recolor using an atomspec that is not the same as the surface category, e.g. >>> >>> color orange :lys >>> color magenta,s :.a >>> color blue,s :1-5 >>> >>> I hope this helps, >>> Elaine >>> ----- >>> Elaine C. Meng, Ph.D. >>> UCSF Chimera(X) team >>> Department of Pharmaceutical Chemistry University of California, San >>> Francisco >>> >>> >>>> On Apr 27, 2020, at 4:10 PM, Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> wrote: >>>> >>>> Hi, Elaine, >>>> >>>> Yes, this is trivial. But I rarely want a tan colored surface. >>>> Surface #0 >>>> Scolor #0 zone #0 range 3 >>>> >>>> Trans 50,s #0 >>>> >>>> Does not work for me. I tried to color a molecule with 6 chains by >>>> chain. I define a different color for each chain with colordef, color each chain (color mycolor #:.A etc.) and followed by scolor #0 zone #0 range 3 That works to get the surface colored nicely. However I can't get it transparent easily. >>>> >>>> Your trick with surfcat is rather interesting in its process. >>>> I can do >>>> Open model.pdb # it has six chains. >>>> Then colordef six different colors >>>> And then >>>> Surcat mysurf #0 >>>> Surface mysurf >>>> >>>> Which gives me a uniformly tan surface but the script goes on to >>>> color col_chain_A #0:.A Etc. >>>> and interestingly the surface changes its color to reflect the chain color - exactly what I needed. >>>> Trans 50,s mysurf >>>> makes it all nice and transparent. Great. (Even though I don't >>>> understand why it works *after* the surface was generated) But I can >>>> never change the color again. Say I think I was wrong with one >>>> color. I can change the model but I can't seem to get color new_color_A #0:.A to work. No automatic update. The chain of course changes color but not the surface. >>>> Surface mysurf also does not update it. >>>> However I can do >>>> surfcat mysurf1 #0 >>>> Surface mysurf1 >>>> That works. >>>> However all this is rather cumbersome - I am likely doing something unintended. >>>> I wanted to animate a change in color of one chain but having a large number of surfcats new_nameX to do seems expensive. >>>> >>>> So while we are at it, surfaces with electrostatic potential or hydrophobicity or bfactors cannot be made transparent ? >>>> >>>> Thanks, >>>> Lothar >>>> >>>> >>>> -----Original Message----- >>>> From: Elaine Meng <meng(a)cgl.ucsf.edu> >>>> Sent: Monday, April 27, 2020 6:31 PM >>>> To: Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> >>>> Cc: chimera-users(a)cgl.ucsf.edu BB <chimera-users(a)cgl.ucsf.edu> >>>> Subject: Re: [Chimera-users] Surfaces and transparency >>>> >>>> Hi Lothar, >>>> I don't understand... or at least I'm not seeing the problem: >>>> >>>> open 3nha >>>> surface >>>> trans 50,s >>>> >>>> (with or without #0, and "surface :adp" instead of "surface") all work fine for me. All I can say is to check the Model Panel to make sure your surface is really #0. If you have a reproducible series of commands where it doesn't work (and you are NOT using custom surface coloring by vertex), then you could report it using menu: Help... Report a Bug. >>>> >>>> I hope this helps, >>>> Elaine >>>> ----- >>>> Elaine C. Meng, Ph.D. >>>> UCSF Chimera(X) team >>>> Department of Pharmaceutical Chemistry University of California, San >>>> Francisco >>>> >>>> >>>>> On Apr 27, 2020, at 1:43 PM, Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> wrote: >>>>> >>>>> Hi, Elaine, >>>>> >>>>> That's a neat trick. It only works with surfcat. >>>>> >>>>> If I do >>>>> >>>>> surface #0 >>>>> trans 50,s #0 >>>>> No matter what I do the transparency does not change. >>>>> >>>>> But with >>>>> Surfcat mystuff >>>>> Surface mystuff >>>>> Trans 50,s >>>>> >>>>> It works as advertised. Also, I noticed that in the first case with an ineffective "trans 50,s" on the command line, the menu Actions->Surface->Transparency->50% did work. >>>>> It's only that I rarely use the menu .... partly because changes in transparency may be animated by a script. >>>>> >>>>> Thanks. >>>>> Lothar >>>>> >>>>> -----Original Message----- >>>>> From: Elaine Meng <meng(a)cgl.ucsf.edu> >>>>> Sent: Monday, April 27, 2020 12:28 PM >>>>> To: Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> >>>>> Cc: chimera-users(a)cgl.ucsf.edu BB <chimera-users(a)cgl.ucsf.edu> >>>>> Subject: Re: [Chimera-users] Surfaces and transparency >>>>> >>>>> Hi Lothar, >>>>> It is not related to the VDW parameters, but to automatic classification of sets of atoms and excluding them from what is (by default) enclosed in a surface. For example, people usually don't expect their ligands, solvent, or metal ions to be lumped together with the macromolecule, so there are automatically defined groupings: >>>>> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/surface.htm >>>>> l#s >>>>> urfcats> >>>>> >>>>> You can use "surfcat" to group the atoms any way you want, however. >>>>> E.g. commands >>>>> >>>>> surfcat mystuff :adp,mg >>>>> surface mystuff >>>>> >>>>> The ion is shown as "sphere" (full VDW radius) and if colored separately may show "through" the surface unless you make it smaller, and surface is "chunky" unless you increase vertex density. >>>>> >>>>> repr bs :mg >>>>> surface mystuff vertexDensity 10 >>>>> >>>>> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/msms.html> >>>>> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/representation.ht >>>>> ml# >>>>> surfaces> >>>>> >>>>> The transparency command works fine for the molecular surface EXCEPT when the surface has custom coloring by vertex (electrostatic potential, for example). For custom coloring by vertex you would have to specify the transparency at the time of coloring. >>>>> >>>>> For example, either of these works fine for the surface that I showed with the commands above, as it was just shown in the initial tan color: >>>>> >>>>> trans 50,s >>>>> trans 50,s #0 >>>>> >>>>> However, you can color by atomic patch and have it retain its transparency, e.g. the following command applies heteroatom coloring to the atoms in mystuff (ADP, MG although they were already colored that way) as well as the corresponding atomic patches in the molecular surface: >>>>> >>>>> color byhet mystuff >>>>> >>>>> Or something like this will also color both the atoms and the corresponding patches in the molecular surface while the surface retains transparency: >>>>> >>>>> color orange :adp >>>>> >>>>> I hope this helps, >>>>> Elaine >>>>> ----- >>>>> Elaine C. Meng, Ph.D. >>>>> UCSF Chimera(X) team >>>>> Department of Pharmaceutical Chemistry University of California, >>>>> San Francisco >>>>> >>>>>> On Apr 26, 2020, at 11:20 AM, Esser, Lothar (NIH/NCI) [E] <esserlo(a)mail.nih.gov> wrote: >>>>>> >>>>>> Hi, >>>>>> In making surfaces around ligands and making them transparent, I ran into some problems: >>>>>> >>>>>> Using open/fetch 3NHA I have a molecule in front of me with ADP Mg bound. >>>>>> Creating a surface around ADP is easy but it won’t cover Mg at all. It seems that single ions like Mg and also single water molecules don’t get surfaces around them. Is this because of default vdW values that need to be manually adjusted ? >>>>>> >>>>>> Let’s say I have a surface around ADP and want to make it >>>>>> transparent, I thought >>>>>> >>>>>> Transparency 50,s #0 >>>>>> >>>>>> Should work but it did not. There are some work arounds using transparent colors through the use of colordef. >>>>>> However, I had planned to color the surface by atom and used >>>>>> scolor #0 zone #0 >>>>>> which worked but I could not get it transparent with transparency >>>>>> statements. However, I can make atoms transparent then use >>>>>> >>>>>> scolor #0 zone #0 #which makes the surface also transparent and hides the ball-and-stick model. >>>>>> To make it show up I can use transparency 0,a #0 and again the stick model appears under the transparent surface. >>>>>> >>>>>> Is there a simpler way ? A way that can be applied to other surfaces that were for instance colored with say potential, hydrophobicity, bfactor key etc ? >>>>>> >>>>>> Thanks >>>>>> Lothar >>> >>> >>> _______________________________________________ >>> Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu Manage >>> subscription: >>> http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users >>> >> >> >> _______________________________________________ >> Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu Manage >> subscription: http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users >> > >

1 0

Surfaces and transparency
by Esser, Lothar (NIH/NCI) [E] 28 Apr '20

28 Apr '20

Hi, In making surfaces around ligands and making them transparent, I ran into some problems: Using open/fetch 3NHA I have a molecule in front of me with ADP Mg bound. Creating a surface around ADP is easy but it won't cover Mg at all. It seems that single ions like Mg and also single water molecules don't get surfaces around them. Is this because of default vdW values that need to be manually adjusted ? Let's say I have a surface around ADP and want to make it transparent, I thought Transparency 50,s #0 Should work but it did not. There are some work arounds using transparent colors through the use of colordef. However, I had planned to color the surface by atom and used scolor #0 zone #0 which worked but I could not get it transparent with transparency statements. However, I can make atoms transparent then use scolor #0 zone #0 #which makes the surface also transparent and hides the ball-and-stick model. To make it show up I can use transparency 0,a #0 and again the stick model appears under the transparent surface. Is there a simpler way ? A way that can be applied to other surfaces that were for instance colored with say potential, hydrophobicity, bfactor key etc ? Thanks Lothar

3 8

About downloading software with remotely with curl or wget
by Mavridakis, Konstantinos 28 Apr '20

28 Apr '20

Greetings My name is Konstantin Mavridakis, and I am part of the molecular and computational modeling group at the HITS institute at Heidelberg. The group is considering updating to the latest production release of chimera. Due to the covid pandemic, all my work is being done remotely right now via ssh; so, I am writing to you to ask if there is a way of downloading the latest production release of chimera using a link for curl or wget. Thank you very much for your time, sincerely, Konstantin Mavridakis

2 2

Permission to use for ACS chemical biology cover figure submission
by Xuanting Wang 28 Apr '20

28 Apr '20

Dear Chimera Team, Thanks for developing this great software for protein structure study! My name is Xuanting Wang. I am a PhD student studying Chemical Engineering at Columbia University. Recently, my co-authored paper was accepted to ACS chemical biology journal. I would like to submit a journal cover image for consideration which part of it was made using your software. I would like to gratefully ask for your permission. Please let me know whether this is possible or give me some advice on what to do in order to obtain your permission. Thanks in advance! With gratitude, Xuanting -- Xuanting Wang Ph.D student at Chemical Engineering, Columbia University B.S. Chemical Engineering, University of Massachusetts Amherst xw2467(a)columbia.edu (413)522-3079

2 1

adding hydrogen to pdbqt
by Marawan Hussien 28 Apr '20

28 Apr '20

I am trying to find an easy to use tool to add hydrogen atoms to molecules in pdbqt format to carbon atoms only as I do not want to change the tautomeric state of the molecules, I tried rdkit, obabel, chimera but every tool I tried will add hydrogen to the entire molecule not carbon atoms only? Any suggestion?

2 1

Autodock Vina
by Kate Wegener 28 Apr '20

28 Apr '20

I'm new to this list, but I saw in the archives that there was a thread on the shutdown of the Opal2 server. I wondered if there were any plans to make Autodock Vina available on alternate servers? Or if anyone knows of another way to access an Autodock Vina server? I have been using this server in a class for the past 5 or 6 years, so I'm keen to find an alternative option. kind regards, Kate

3 3

Problems with using volume series in ChimeraX
by Sarah Piper 28 Apr '20

28 Apr '20

Hi everyone, I would like to use volume series (frames from e.g. cryosparc 3D variability analysis in mrc format) in ChimeraX (currently using version 0.91). However, when I open the frames in chimeraX (frames numbered from #1.1 to #1.19) and run the command 'vseries play #1’, it cannot play the volume series and has the following error: "No volume series specified". I have the feeling that I am doing something wrong when opening the frames in chimeraX. Would someone be able to tell me if, and how, I can display a volume series in ChimeraX? Many thanks, Sarah

2 2

viewing the model
by Dmitry A. Semchonok 27 Apr '20

27 Apr '20

2 1

Using APBS via UCSF-Chimera
by Boaz Shaanan 24 Apr '20

24 Apr '20

Hi Elaine, There has been a recent message on the pdb2pqr/apbs bb about transferring the programs to a new site: http://apbs-rest-test.westus2.cloudapp.azure.com/ Would it be possible to access APBS via Chimera in the new location? Below please find pasted the message from Nathan Baker about the site change: ------------------------ Hello – I’m sorry about the problems you are experiencing. Can you please let us know if you are using http://apbs-rest-test.westus2.cloudapp.azure.com/ or http://nbcr-222.ucsd.edu/pdb2pqr_2.0.0/ when you encounter this problem? Thank you, -- Nathan Baker Physical and Computational Sciences Directorate — Pacific Northwest Natl Lab Department of Applied Mathematics — University of Washington +1-509-375-3997 — https://www.linkedin.com/in/nathanandrewbaker/ --------------------------------- Stay safe! 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 ________________________________________ From: Chimera-users <chimera-users-bounces(a)cgl.ucsf.edu> on behalf of chimera-users-request(a)cgl.ucsf.edu <chimera-users-request(a)cgl.ucsf.edu> Sent: Friday, April 24, 2020 6:03 AM To: chimera-users(a)cgl.ucsf.edu Subject: Chimera-users Digest, Vol 204, Issue 25 Send Chimera-users mailing list submissions to chimera-users(a)cgl.ucsf.edu To subscribe or unsubscribe via the World Wide Web, visit http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users or, via email, send a message with subject or body 'help' to chimera-users-request(a)cgl.ucsf.edu You can reach the person managing the list at chimera-users-owner(a)cgl.ucsf.edu When replying, please edit your Subject line so it is more specific than "Re: Contents of Chimera-users digest..." Today's Topics: 1. Autodock Vina, APBS, PDB2PQR web services will be removed (Elaine Meng) 2. Re: Autodock Vina, APBS, PDB2PQR web services will be removed (Gregory Babbitt) 3. Re: Autodock Vina, APBS, PDB2PQR web services will be removed (Elaine Meng) 4. Re: Imagine processing from gromacs (benjamintam) 5. Session opening issue (Zheng, Fengwei) ---------------------------------------------------------------------- Message: 1 Date: Thu, 23 Apr 2020 15:20:14 -0700 From: Elaine Meng <meng(a)cgl.ucsf.edu> To: "chimera-users(a)cgl.ucsf.edu List" <chimera-users(a)cgl.ucsf.edu> Subject: [Chimera-users] Autodock Vina, APBS, PDB2PQR web services will be removed Message-ID: <D0F537B2-0035-4D11-99A5-37D783428E2B(a)cgl.ucsf.edu> Content-Type: text/plain; charset=us-ascii Dear Chimera users, The Autodock Vina, APBS, and PDB2PQR tools in Chimera rely on web services provided by another lab, the National Biomedical Computation Resource. However, these web services are scheduled to be retired on April 30, 2020. When that happens, the Autodock Vina, APBS, and PDB2PQR tools in Chimera will no longer work, except for the (very few) people who use the tools to run locally installed copies of the program instead of the web services. Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco ------------------------------ Message: 2 Date: Thu, 23 Apr 2020 22:30:14 +0000 From: Gregory Babbitt <gabsbi(a)rit.edu> To: "chimera-users(a)cgl.ucsf.edu List" <chimera-users(a)cgl.ucsf.edu> Subject: Re: [Chimera-users] Autodock Vina, APBS, PDB2PQR web services will be removed Message-ID: <1587681014069.66026(a)rit.edu> Content-Type: text/plain; charset="iso-8859-1" Thanks Elaine I am also curious about the future of the Modeller tool to refine loops via homology. will that also phase out? Dr. Gregory A Babbitt Associate Professor T.H. Gosnell School of Life Sciences Rochester Institute of Technology Rochester NY USA software website: http://people.rit.edu/gabsbi YouTube channel https://www.youtube.com/channel/UCJTBqGq01pBCMDQikn566Kw ________________________________________ From: Chimera-users <chimera-users-bounces(a)cgl.ucsf.edu> on behalf of Elaine Meng <meng(a)cgl.ucsf.edu> Sent: Thursday, April 23, 2020 6:20 PM To: chimera-users(a)cgl.ucsf.edu List Subject: [Chimera-users] Autodock Vina, APBS, PDB2PQR web services will be removed Dear Chimera users, The Autodock Vina, APBS, and PDB2PQR tools in Chimera rely on web services provided by another lab, the National Biomedical Computation Resource. However, these web services are scheduled to be retired on April 30, 2020. When that happens, the Autodock Vina, APBS, and PDB2PQR tools in Chimera will no longer work, except for the (very few) people who use the tools to run locally installed copies of the program instead of the web services. Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco _______________________________________________ Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu Manage subscription: http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users ------------------------------ Message: 3 Date: Thu, 23 Apr 2020 15:39:07 -0700 From: Elaine Meng <meng(a)cgl.ucsf.edu> To: Gregory Babbitt <gabsbi(a)rit.edu> Cc: "chimera-users(a)cgl.ucsf.edu List" <chimera-users(a)cgl.ucsf.edu> Subject: Re: [Chimera-users] Autodock Vina, APBS, PDB2PQR web services will be removed Message-ID: <3E51C8AE-0F6C-4333-B665-D361CF8AC05D(a)cgl.ucsf.edu> Content-Type: text/plain; charset=us-ascii Hi Gregory, The other web services used by Chimera (Modeller, Blast Protein, Clustal Omega, MUSCLE, and others) won't be affected at this time because they're provided by our lab (RBVI), not the NBCR. Best, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco > On Apr 23, 2020, at 3:30 PM, Gregory Babbitt <gabsbi(a)rit.edu> wrote: > > Thanks Elaine > > I am also curious about the future of the Modeller tool to refine loops via homology. > > will that also phase out? > > Dr. Gregory A Babbitt > Associate Professor > T.H. Gosnell School of Life Sciences > Rochester Institute of Technology > Rochester NY USA > software website: http://people.rit.edu/gabsbi > YouTube channel https://www.youtube.com/channel/UCJTBqGq01pBCMDQikn566Kw ------------------------------ Message: 4 Date: Fri, 24 Apr 2020 02:36:10 +0000 From: benjamintam <benjamintam(a)um.edu.mo> To: chimera-users <chimera-users(a)cgl.ucsf.edu> Subject: Re: [Chimera-users] Imagine processing from gromacs Message-ID: <a758179c585148ca91c07ceefbbc1134(a)UMMBX3.pclan.umac.mo> Content-Type: text/plain; charset="us-ascii" Hi Eric, Thank you very much for your help. Although I am not sure whether is the university or the mailing list blocked the code content. Nevertheless, I appreciate your help. Best regards, Ben Ph.D, M.Eng, FHEA From: Eric Pettersen<mailto:pett@cgl.ucsf.edu> Sent: 24 April 2020 02:51 To: benjamintam<mailto:benjamintam@um.edu.mo> Cc: chimera-users(a)cgl.ucsf.edu<mailto:chimera-users@cgl.ucsf.edu> Subject: Re: [Chimera-users] Imagine processing from gromacs Hi Ben, Typically, one "wraps" a PBC trajectory to produce a new trajectory where molecules stay whole on one side of the box or the other. For Gromacs, the tool for that is trjconv, perhaps with the "-pbc whole" flags. See this page: gmx trjconv - GROMACS 2018 documentation<https://imsva91-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=https%3a%…>. If wrapping a trajectory is problematic for some reason, you could define a per-frame Python script to hide long bonds. I have attached such a script. To use it, in the MD Movie GUI choose the Per-Frame?Define script... menu entry, and in the resulting dialog change the script type to "Python" and use the "Insert text file" button near the button to insert the attached Python file. Then click OK. Long bonds should disappear and you can play your trajectory and bonds will be hidden and shown appropriately. --Eric Eric Pettersen UCSF Computer Graphics Lab

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