- Chimera-users - RBVI Mailing Lists

RRDistMaps: plot not corresponding to tabulated distance data?
by Dr. Michael Weber 02 Jan '25

02 Jan '25

Hi, I played around a bit with the nice RRDistMaps tool in Chimera v1.17.3 and I am wondering why the output .png plot's size of a single protein structure analysis doesn't correspond at all to the protein length? For a 659 amino acid long protein I was expecting to find a plot in which the distance matrix data area is sized 659 by 659 pixels (or multiples of this) to allow for placing the corresponding grey-scale value for each calculated distance as indicated in the plot's legend. Instead, it appears that the output image's dimensions are actually dynamically adjusted depending on the RRDistMaps's tool window size at the time of generating the plot. As a result, the core data region in the plot can barely accomodate the full data set with regular screen resolutions - at my end at least, it is always smaller (except maybe for very small proteins; I did not check this in more detail, yet). Playing with the sliders and trying to re-export those manually re-formatted images also doesn't seem to solve the problem. Did I miss something here? I just found out about this accidentally while writing a small Python program analyzing the output plots pixel-wise. ;-) I also noticed that the data area appears bordered by a triple line set (single pixel wide, each: grey-black-grey). Please note that I don't question the numeric distance data as exported in .csv/.tsv format - it's all just about the exported .png file. One additional question: Is it possible to run this tool in batch mode from the command line with parameters specifying (forcing) the (correct) output plot size (data region), the input .pdb structure file and all the options available in the GUI plus export the distance data table in .csv format (and maybe even the alignment data)? And finally, it appears that I encontered a possible bug when trying to process more than two sequences using RRDistMaps: The Muscle-based online alignment seems to fail (tried it for two days now) - here is the log: Traceback from web service request (connection setup): Traceback (most recent call last): File "C:\Program Files\Chimera 1.17.3\share\WebServices\opal_client.py", line 11, in __init__ self._setup(serviceName, opalURL, sessionData) File "C:\Program Files\Chimera 1.17.3\share\WebServices\opal_client.py", line 50, in _setup self.sudsClient = Client(self.serviceURL + "?wsdl", **kw) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\client.py", line 115, in __init__ self.wsdl = reader.open(url) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\reader.py", line 150, in open d = self.fn(url, self.options) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\wsdl.py", line 136, in __init__ d = reader.open(url) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\reader.py", line 74, in open d = self.download(url) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\reader.py", line 92, in download fp = self.options.transport.open(Request(url)) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\transport\https.py", line 62, in open return HttpTransport.open(self, request) File "C:\Program Files\Chimera 1.17.3\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\transport\http.py", line 69, in open raise TransportError(str(e), e.code, e.fp) TransportError: HTTP Error 404: Not Found Typically, if you get a TypeError, it's a problem on the remote server and it should be fixed shortly. If you get a different error or get TypeError consistently for more than a day, please report the problem using the Report a Bug... entry in the Help menu. Please include the traceback printed above as part of the problem description. Traceback from web application request: Traceback (most recent call last): File "C:\Program Files\Chimera 1.17.3\share\WebServices\appWebService.py", line 51, in _initApp self.backend = Backend(service, url) File "C:\Program Files\Chimera 1.17.3\share\WebServices\opal_client.py", line 21, in __init__ raise NonChimeraError("Web service appears " NonChimeraError: Web service appears to be down. See Reply Log for more details. Service 'opal:MuscleService' is unavailable. See Reply Log for more details. Best regards, Michael. -- Dr. Michael H.W. Weber Rechenkraft.net e.V.

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converting Chimera .py to ChimeraX
by John Price 12 Dec '24

12 Dec '24

Hi, I have looked through the wiki and don't see anything relating to this. Is there a simple way to change the .py or .pyc Chimera to a format that can be used in ChimeraX? Have a great day, JC John C. Price, Ph.D. Professor of Biochemistry Brigham Young University E113 Benson Building 801-422-6040

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Movie from pdb file with 30 models of a conformational change.
by Evan Kantrowitz 02 Dec '24

02 Dec '24

Hi, Can someone give me help with a, I think, simple issue. I have a single pdb file containing 30 MODELS These 30 models correspond to a conformational change. Here is a portion of the Models list When I read it in,I see all 30 models showing in the view. What I want to do is make a movie showing these 30 MODELS one after the other. I have tried coordset and coordset slider but have not got it to work. Thanks Evan PS. This is what the image looks like with the 30 frames.It was generated from the A chain of pdb files 2e2n and 2e2q using the website ViewMotions (viewmotions.bc.edu <http://viewmotions.bc.edu/>). ----------------------------------------------------------------------------- Evan R. Kantrowitz, Ph.D evan.kantrowitz(a)bc.edu <mailto:evan.kantrowitz@bc.edu> Emeritus Professor of Chemistry Cell: 617-775-9915 Boston College www2.bc.edu/evan-kantrowitz <http://www2.bc.edu/~kantrow> -----------------------------------------------------------------------------

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Issue with Display of Hydrogen Bonds in Find H Bond Tool in Chimera
by GABRIELE SANTOS CEPINHO 12 Nov '24

12 Nov '24

Dear Chimera Support Team, My name is Gabriele Cepinho, and I am using Chimera version 1.17.3 for molecular docking analysis in my research. Recently, I encountered an issue with the Find H Bond tool that I have been unable to resolve, and I hope you may be able to assist me. When I use the Find H Bond tool to display hydrogen bonds between molecules, the generated image also shows polar interactions along with the specific hydrogen bonds. However, in the tool’s output file, I can clearly identify which interactions are true hydrogen bonds. My goal is to display only the hydrogen bonds in the image, excluding the polar interactions, but I have not been able to adjust the tool to achieve this. I have tried modifying the distance and angle parameters to restrict the display, yet polar interactions still appear alongside the hydrogen bonds in the visualization. I appreciate any guidance or recommendations you can provide regarding this matter. If there is any additional option to filter these interactions directly in the image, or if there is an update or specific setting available for the Find H Bond tool, I would be grateful to know about it. Thank you in advance for your attention. Best regards, Gabriele Cepinho -- ---- É obrigatória a utilização do e-mail @unifesp em todas as correspondências oficiais, institucionais e no acesso aos equipamentos e sistemas da Universidade Federal de São Paulo, conforme a portaria Reitoria n. 1182/2022 <https://sti.unifesp.br/documentos/termos-de-uso-do-email> que define a Política de e-mail institucional da Unifesp. <https://sei.unifesp.br/sei/publicacoes/controlador_publicacoes.php?acao=pub…>

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Write out SeqRes entry
by David Bhella 07 Nov '24

07 Nov '24

Dear Chimera/ChimeraX team, I have a model for an asymmetric unit of a virus capsid that has three chains of the same capsid protein – but I am having trouble depositing my model in the PDB because it only has a seqres entry for one of the three chains (B). Whatever I do, chimeraX will only write entries for that chain. Is there a way to force chimeraX (or any other program) to write the seqres card for each chain correctly? Thanks D David Bhella Professor of Structural Virology Director, Scottish Centre for Macromolecular Imaging Associate Director, MRC - University of Glasgow Centre for Virus Research +44 (0)141 330 3685<tel:+441413303685> [signature_1350623625] [Logo, company name Description automatically generated]

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Values at Atom Positions
by jp d 01 Nov '24

01 Nov '24

hi, sorry to bother you again, is it possible to run "Values at Atom Postions" from a script where i specify map,pdb and just the output attribute file ? thanks jpd

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ccp4 map from mtz
by Vitali James 31 Oct '24

31 Oct '24

Dear Greg, I just converted my mtz file in phenix to ccp4 maps. Chimera can open the mFo-DFc.ccp4 and 2mFo-DFc.ccp4 but how to fit pdb into the map?. Somehow the map does not appear as continuous crystals as in coot. Can you please explain how to align the pdb structure wuth the map. best James

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About using Chimera(X) in articles
by Elaheh Kashani-Amin 30 Oct '24

30 Oct '24

Dear Chimera developers, We are a research and education group based in Iran and have been using Chimera(X) to teach our students about homology modeling and molecular docking. Recently, we discovered that our access to your website has been denied. Although we can access it via VPN, we would like to inquire if we can legally use Chimera(X) for academic purposes and cite it in our papers. We would greatly appreciate it if you could provide us with legal access to your products. Thank you for your time and consideration. Best regards Elaheh Kashani-Amin PhD, Molecular Medicine

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which file is the Modeller executable on linux?
by Elaine Meng 30 Oct '24

30 Oct '24

Forwarding to chimera-users(a)cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu> so that somebody who knows the answer can respond. I don't know since I'm not on linux and do not use a local installation, sorry. That is the recommended address for asking questions about Chimera. Note that we do not actively develop Chimera any more. ChimeraX is recmomended instead -- it has essentially the same capabilities to interface with Modeller (local or web service) for loop modeling and for comparative modeling. The comparative modeling tool in ChimeraX is better than in Chimera, because it allows modeling multimers whereas the Chimera tool only allows modeling a single protein chain. Here are the help pages for the two ChimeraX tools, Model Loops and Modeller Comparative: <https://www.rbvi.ucsf.edu/chimerax/docs/user/tools/modeller.html> <https://www.rbvi.ucsf.edu/chimerax/docs/user/tools/modeller.html> Also, there is a different address chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu> for asking questions about ChimeraX. Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Resource for Biocomputing, Visualization, and Informatics Department of Pharmaceutical Chemistry University of California, San Francisco > From: Modeller Caretaker <modeller-care(a)salilab.org> > Subject: Re: > Date: October 29, 2024 at 3:58:41 PM PDT > To: Yassin Ahmed <yassin.ahmed2200m(a)copharm.uobaghdad.edu.iq> > > On 10/29/24 8:12 AM, Yassin Ahmed wrote: >> Please l have download and installed modeller in my Linux system , >> now I want to run modeller locally by Chimera >> Please where can I find the "Modeller executable file location" and also where can I find the "custom Modeller script file location" ? ,,,, >> Because there are many files named modeller and mod in installation folder,so I am confused. Please guide me > > Hi Yassin, I'm not 100% sure what the Chimera developers mean by "Modeller executable file" so I've cc'd Elaine from the Chimera team, but assuming you're running the latest version of Modeller, they probably mean the mod10.6 script. Where that is depends on how you installed Modeller. If you used the RPM, it is /usr/bin/mod10.6. > > In most cases you would not need to change the Modeller script file, instead using that generated by Chimera, so you can leave that box blank, I think. > > Ben Webb, Modeller Caretaker

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camera view
by Vitali James 29 Oct '24

29 Oct '24

Dear chimera users, My camera window view looks like green and gray lines. I attached the image as well. Can you please suggest why it looks like this? Best J. Vitali

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Request for Example Data for Visualization
by elzaferry9＠gmail.com 28 Oct '24

28 Oct '24

The content of this message was lost. It was probably cross-posted to multiple lists and previously handled on another list.

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Request for Example Data for Visualization
by lilei 27 Oct '24

27 Oct '24

Dear Chimera Development Team, I hope this message finds you well. My name is kevin, and I am currently working on a project that involves the use of UCSF Chimera for molecular visualization. I am reaching out to inquire if you could provide me with example data, particularly the "Example_FCTM" directory that contains the chimera_load.py script and other relevant files. Having access to this data would greatly assist me in understanding and utilizing Chimera more effectively for my work. Thank you for your time and assistance. I look forward to your response. Best regards,

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split local resolution map by color
by jp d 24 Oct '24

24 Oct '24

hi, i have a local resolution map from cryosparc i would like to split it by color (resolution) it seems like Tools -> Color zone may do this ? i can display the local resolution map and it colors correctly, but when i try to split it with color zone, it say the map has no color zone. any pointers or suggestion would be appreciated. thanks jpd

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Inquiry: Covalent bond distances
by Joshua Angelo Mandanas 18 Oct '24

18 Oct '24

Greetings from the Philippines! Hi, I am Assoc. Prof Joshua Angelo, a Lead Researcher. I am currently utilizing Chimera to analyze/visualize the docked structures I processed in ClusPro. In the course of my utilization with Chimera, I came across that majority of hydrogen bonds have closer atomic interactions (e.g. 1.8 Å- 2.5 Å), as opposed to covalent bonds (I usually get atomic distances more than 2.5 or 2 Å). Note, that I based the covalent bonds based on the label from the atomic distance and nature of the residues involved (e.g. S-O, C-O). I humbly would like to know why covalent bonds in UCSF Chimera have further atomic (residue) distances between inter-models? Is it because of torsions from nearby hydrogen bonds? Or torsions from the actual docked structure? Hope for your prompt response. Thank you very much! Best regards, JOSH

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Re: [chimerax-users] Issues accessing your websites
by Elaine Meng 18 Oct '24

18 Oct '24

See previous announcement forwarded below. To the best of my knowledge, we expect the websites etc. to be available again on Oct 21. They may be available earlier than that, but not be reliable (could go back down). Elaine > From: Elaine Meng via ChimeraX-users <chimerax-users(a)cgl.ucsf.edu> > Subject: [chimerax-users] Oct 14-20 Chimera(X) website downtime > Date: October 10, 2024 at 11:38:29 AM PDT > To: ChimeraX Users Help <chimerax-users(a)cgl.ucsf.edu>, "chimera-users(a)cgl.ucsf.edu List" <chimera-users(a)cgl.ucsf.edu> > Reply-To: Elaine Meng <meng(a)cgl.ucsf.edu> > > Planned downtime for server maintenance: > > The Chimera and ChimeraX websites, Toolshed, web services (Blast Protein, Modeller, ...) and cgl.ucsf.edu e-mail will be unavailable starting Monday, October 14, 10 AM PDT and continuing for several days, potentially through the following weekend (October 14-20). > > Apologies for the inconvenience, > Elaine > ----- > Elaine C. Meng, Ph.D. > UCSF Chimera(X) team > Resource for Biocomputing, Visualization, and Informatics > Department of Pharmaceutical Chemistry > University of California, San Francisco > On Oct 17, 2024, at 8:10 AM, Karp Mike (External) via ChimeraX-users <chimerax-users(a)cgl.ucsf.edu> wrote: > > Hi, > We’ve been trying to install a chimerax plugin over the last few weeks and noticed we were unable to access the webpage the application tries to open (ChimeraX Toolshed). We checked and found this wasn’t accessible from multiple internet connections. > I’ve since noticed we are also unable to access any content on https://cgl.ucsf.edu > Are you aware of an issue with your web sites? > Regards, > Mike.Legal Notice: This electronic mail and its attachments are intended solely for the person(s) to whom they are addressed and contain information which is confidential or otherwise protected from disclosure, except for the purpose for which they are intended. Dissemination, distribution, or reproduction by anyone other than the intended recipients is prohibited and may be illegal. If you are not an intended recipient, please immediately inform the sender and return the electronic mail and its attachments and destroy any copies which may be in your possession. UCB screens electronic mails for viruses but does not warrant that this electronic mail is free of any viruses. UCB accepts no liability for any damage caused by any virus transmitted by this electronic mail. (Ref: #*UG1107) [Ref-UG1107] > _______________________________________________ > ChimeraX-users mailing list -- chimerax-users(a)cgl.ucsf.edu > To unsubscribe send an email to chimerax-users-leave(a)cgl.ucsf.edu > Archives: https://mail.cgl.ucsf.edu/mailman/archives/list/chimerax-users@cgl.ucsf.edu/

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Question about Ramachandran probability assignment to attributes
by Sergio Garay 18 Oct '24

18 Oct '24

Hi everyone! I have a question regarding the use of probability assignment to attributes: for example, if I take chain A of 1ay7.pdb, open the Ramachandran plot, and ask it to assign the probabilities as an attribute, then select all residues with a probability lower than 0.01, I end up with two selected residues, one in the allowed regions for alpha helices and another in the beta sheet regions. I expected that residues outside the allowed regions or near the edges of the allowed zones would be selected, not in the center of them. Can someone explain what my mistake is? Thanks a lot! Sergio -- *Dr. Sergio Garay* *Profesor Adjunto Càtedra de Práctica Profesional de Bioquímica* *Cátedra de Bioinformática* *Facultad de Bioquimica y Cs. BiológicasUniversidad Nacional del LitoralSanta Fe - ArgentinaC.C. 242 - Ciudad Universitaria - C.P. S3000ZAAArgentinaPh. +54 (342) 4575-213Fax. +54 (342) 4575-221 *

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Assistance required for Chimera software download
by Parnian Soleimani 18 Oct '24

18 Oct '24

I hope this email finds you well. I am having trouble accessing the Chimera software download site. I would greatly appreciate your guidance on how to resolve this matter. Thank you in advance for your help.

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Oct 14-20 Chimera(X) website downtime
by Elaine Meng 10 Oct '24

10 Oct '24

Planned downtime for server maintenance: The Chimera and ChimeraX websites, Toolshed, web services (Blast Protein, Modeller, ...) and cgl.ucsf.edu e-mail will be unavailable starting Monday, October 14, 10 AM PDT and continuing for several days, potentially through the following weekend (October 14-20). Apologies for the inconvenience, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Resource for Biocomputing, Visualization, and Informatics Department of Pharmaceutical Chemistry University of California, San Francisco

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Center and Orient
by Hernando J Sosa 09 Oct '24

09 Oct '24

Dear Chimera, What would be the equivalent commands to the Center and Orient buttons at the bottom of the Volume Viewer menu tab? Thanks H.

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How will hydrogen bonds be highlighted in the final rendering
by 姜恩誉 09 Oct '24

09 Oct '24

Hello, when chimera software was used to analyze the interaction between small molecular ligands and proteins, the hydrogen bond width was set to 24, but the hydrogen bond in the rendered picture was very thin and difficult to distinguish. How can I solve this problem？ Looking forward to your reply 姜恩誉 2023111025(a)stu.njau.edu.cn

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Request for authorization to use Chimera software
by Stany Tsom 03 Oct '24

03 Oct '24

Dear UCSF Chimera software Coordinator, I am Tsomene Stany Lionel, I have a master's degree in Organic Chemistry obtained at the University of Yaoundé 1, a well known University around central Africa, my studies was focused in isolation, synthesis, characterizations, in vitro and in silico studies, I have worked under the direction of Dr. Messi Angelique Nicolas. Since 2020, during the pandemic there is an increase demand in computerized aided research of bioactive compounds. At the same time, it helps us focus on specific bioactive compounds showing better results. At Yaoundé 1 University, there is a large need in learning and usage of your software for in silico purposes, that is for molecular docking studies, with your permission we will like to organize a series workshops at the University to help masters students, Ph D students and also Professors for the better understanding of molecular docking and help then have better results for their research purposes. We will like at the end of each workshop deliver a certificate for this software learning. Software coordinator, we will really be glad if you accept directing, giving us permission for this use of your software for these workshop Organization and while not coordinating this future. At the end we will with your permission co sign the certificates we will deliver to the participants. References Dr. Messi Angelique Nicolas, Senior Lecturer at University of Yaoundé 1 messiangeliquenicolas(a)gmail.com Dr. Ngomo Orleane , Senior Lecturer at University of Yaoundé 1 orleansn(a)yahoo.fr All the details of my informations are in the attachment -CV/resume - Masters degree (masters 2 and 1 transcripts) -Bachelors degree While waiting for an answer from you UCSF Chimera Software coordinator, receive my distinct greetings. Sincerely Tsomene stany

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Software copyright consulting
by 姜恩誉 27 Sep '24

27 Sep '24

Hello, is the application of your Chimera X software for paper publication a non-commercial use？ Looking forward to your reply。 Thank you 姜恩誉 2023111025(a)stu.njau.edu.cn

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Gaff type for Mn2+ to run antechamber
by Medhanjali Dasgupta 25 Sep '24

25 Sep '24

Dear all, I am trying to generate the electrostatic surface for a protein that contains Mn in the 2+ state in its active site. I've tried to go about it in two ways but keep getting stuck. 1. If I use chimera or Pymol to use the PDB2PQR-APBS plug in, it cannot find GAFF type for Mn2+ so it cannot run anyechamber to allocate the atomic charge to Mn2+. Am i missing an update? Is there any way to get around this? Can I run antechamber myself to recognise my ion of interest, and then determine the charge, input it into the .pqr file and run APBS? 2. I have used the online server hosted at poissonboltzmann.org to run pdb2pqr and apps but run into the problem of not knowing what the atomic charge is for Mn2+. Any help would be appreciated. Thanks!!! Medhanjali

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question about non-standard amino acids
by Jessie Jaynes 23 Sep '24

23 Sep '24

Hi Folks, I have a short peptide (O=ornithine) FEFOGGOFEF Is it possible to construct this peptide in Chimera? Thank you, Jesse

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Generating a single electrostatic potential surface for a protein + ligand complex
by jadeshi88＠gmail.com 22 Sep '24

22 Sep '24

Hi, New user to ChimeraX here, would really appreciate some help! I'm trying to generate an electrostatic potential surface for a protein-ligand complex. Currently, I am using the surface/coulombic, and surface ligand/coulombic ligand commands to generate surfaces separately for the protein and ligand, and then exporting to an .obj file. However, by doing so I'm left with two separate surface meshes, and what I really want is a single surface that encapsulates both entities. Is it possible to do this? Thanks in advance!

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