- Chimera-users - RBVI Mailing Lists

New residues for swap commands
by Rodrigo Galindo-Murillo 15 Jun '22

15 Jun '22

Hello! Is it possible to add new amino acids to the swapaa and new nucleotides for the swapna commands? Thank you! Rodrigo.

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Discrepancies Between Running Python Script From Terminal and GUI
by Rafi Brent 06 Jun '22

06 Jun '22

To whom it may concern, I have a set of about 20,000 pdb files to which I would like to add Hydrogens, add partial charges, and convert to the mol2 format. I have written a python script to perform these tasks, which it does without issue when opened from the GUI using the "open" option in the top left corner. However, as soon as the script start srunning, I become unable to interact with the Chimera GUI and my computer warns that the application is not responding. While it continues to iterate through the pdb files and convert them to mol2 files, this process slows down drastically over time, from one file per second to over 30 seconds between files, a rate that is prohibitively slow. It is not clear to me why these issues are occurring, as there is nothing about the way my script is written that should increase the computational load over time. Based on the unresponsiveness of the Chimera application, I assumed that the slowdown might have something to do with the GUI, so I instead ran my script from the terminal, using chimera -- nogui python_script.py . This resulted in a rate of file conversion that was much faster than the GUI even before its slowdown, but it raised an error that was never a problem in the GUI: Cannot properly run "/Applications/Chimera.app/Contents/Resources/bin/amber18/bin/sqm -O -i sqm.in -o sqm.out". This only occurred on nonstandard amino acid residues, but the error was not solely determined by the residue's identity, as many carboxylated lysine residues were processed properly before the system encountered one particular file whose KCX residue caused it to crash. However, the error is consistent, meaning that the same KCX residue on that particular file always causes the program to crash. I have had no luck searching for the error online, but I am happy to include the entire error message in context if that would be helpful. More generally, I don't understand why running the exact same python script through the GUI and through the terminal window gives such different results. I'm happy to do it either way as long as the operation can be completed successfully within a day or two, and I would be very thankful for any advice you may have. Sincerely, Rafi Brent

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Downloading Trouble
by Harman Thind 02 Jun '22

02 Jun '22

To whom it may concern, I have a problem opening up Chimera. Every time I run the app the error message found in the image shows up. I have tried reinstalling the app and restarting my laptop... however, that hasn't accomplished much. What steps should I take next? Thank you for your time. - Harman T. [image: image.png]

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Fatal error during Energy minimization
by Saousen Diaf 02 Jun '22

02 Jun '22

Dear all, I am using structure minimize tool in UCSF Chimera to minimize a glycosylated structure, but I get a fatal error: *Failure running ANTECHAMBER for residue BMA+MAN+NAG+MAN+NAG+PHE+MAN+ASN* *Check reply log for details* *any idea on how to resolve the issue.* *Thank you in advance for your help.* *Best* *Saousen*

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Blast not working
by Antonio Díaz Quintana 02 Jun '22

02 Jun '22

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Re: [Chimera-users] Blast not working
by Tom Goddard 01 Jun '22

01 Jun '22

Hi Antonio, Glad to hear the new Chimera 1.16 version is working. Tom > On Jun 1, 2022, at 3:25 AM, Antonio Díaz Quintana <antonio.diaz(a)iiq.csic.es> wrote: > > Hello Tom, > > Thankyou. It worked. > > Best, > > Antonio > > El 01/06/2022 a las 07:07, Tom Goddard escribió: >> Hi Antonio, >> >> The error "ImportError: No module named replyobj" means Chimera cannot find its message logging module called "replyobj". That suggests that your Chimera installation is broken, and does not appear to be a problem specifically with BLAST. I would suggest installing the current Chimera version 1.16. >> >> If that does not fix it, use the Report a Bug... button that should appear when this error message is shown. Or if that button does not appear use Chimera menu entry Help / Report a Bug.... >> >> Tom >> >> >>> On May 31, 2022, at 8:05 AM, Antonio Díaz Quintana via Chimera-users <chimera-users(a)cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu>> wrote: >>> >>> Dear all, >>> >>> Recently, I stopped being able to perform a BLAST search from the SEQUENCE tool in UCSF Chimera. Is there anything I could do to fix this? >>> >>> Log message follows: >>> >>> Web Service: BlastProtein2 is a Python wrapper that calls blastp to search nr or pdb for sequences similar to the given protein sequence >>> Opal service URL: http://webservices.rbvi.ucsf.edu/opal2/services/BlastProtein2Service <http://webservices.rbvi.ucsf.edu/opal2/services/BlastProtein2Service> >>> Opal job URL: http://webservices.rbvi.ucsf.edu/appBlastProtein2Service1654009255276130143… <http://webservices.rbvi.ucsf.edu/appBlastProtein2Service1654009255276130143…> >>> Traceback (most recent call last): >>> File "C:\Program Files\Chimera 1.15rc\share\chimera\tasks.py", line 179, in runStatusCB >>> task.statusCBList[0]() >>> File "C:\Program Files\Chimera 1.15rc\share\blastpdb\ParserBlastP.py", line 434, in _statusCB >>> self.finishCB(self.params, output) >>> File "C:\Program Files\Chimera 1.15rc\share\blastpdb\gui.py", line 424, in _finish >>> self.fetchColumnValues() >>> File "C:\Program Files\Chimera 1.15rc\share\blastpdb\gui.py", line 449, in fetchColumnValues >>> info = fetch_pdb_info(pdb_ids) >>> File "C:\Program Files\Chimera 1.15rc\share\blastpdb\pdbinfo.py", line 151, in fetch_pdb_info >>> import replyobj >>> ImportError: No module named replyobj >>> >>> Best, >>> >>> Antonio >>> >>> -- >>> Dr. Antonio J. Díaz Quintana >>> Instituto de Investigaciones Químicas >>> Universidad de Sevilla - CSIC >>> Avda. Americo Vespucio 49 >>> 41092 Sevilla >>> Spain >>> >>> Phone: +34 954 48 9631 >>> _______________________________________________ >>> Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu <mailto:Chimera-users@cgl.ucsf.edu> >>> Manage subscription: https://www.rbvi.ucsf.edu/mailman/listinfo/chimera-users <https://www.rbvi.ucsf.edu/mailman/listinfo/chimera-users> >> > -- > Dr. Antonio J. Díaz Quintana > Instituto de Investigaciones Químicas > Universidad de Sevilla - CSIC > Avda. Americo Vespucio 49 > 41092 Sevilla > Spain > > Phone: +34 954 48 9631

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Re: [Chimera-users] HBONDS comparing GROMACS and CHIMERA
by Elaine Meng 31 May '22

31 May '22

----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco Forwarding to the list so that somebody who knows more about the code can answer... > On May 30, 2022, at 1:23 AM, Sourpis, Anastasios <asourpis(a)uni-mainz.de> wrote: > > Dear Elaine, > > I would like to ask you if > CHIMERA is openned source. > > And if yes how can I have access to the Hbonds > class/funtion to understand better how it works? > > Kind regards, > Tasos > > > > On May 25, 2022, at 11:32 AM, Elaine Meng via Chimera-users <chimera-users(a)cgl.ucsf.edu> wrote: > > > > > > Dear Tasos Sourpis, > > > It is not surprising that different programs give (partially) different results, because each program uses somewhat different methods and/or parameters to identify H-bonds. There is no universally accepted exact method. However, my guess is that they would agree in the majority of cases. > > > > > > The method used by Chimera is described in the help page: > > > <https://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/findhbond/findhb…> > > > > > > To summarize, there are several different distance and angle cutoffs depending on the atom types (element and hybridization state) of both the donor and acceptor. The diagram of how the angle is defined would also depend on both of those types. > > > > > > So probably what you are interested in are the exact diagrams for the different donor-acceptor pair types and the cutoff values for distances and angles. These are in the figures and tables of the paper cited in the link above, namely > > > > > > Three-dimensional hydrogen-bond geometry and probability information from a crystal survey. Mills JE, Dean PM. J Comput Aided Mol Des. 1996 Dec;10(6):607-22. > > > > > > Then Chimera allows adding tolerance values to the cutoffs of distances and angles from the paper, because they were defined on very high-resolution crystal structures, but used on structures that may not be so precise. > > > > > > I hope this helps, > > > Elaine > > > ----- > > > Elaine C. Meng, Ph.D. > > > UCSF Chimera(X) team > > > Department of Pharmaceutical Chemistry > > > University of California, San Francisco > > > > > > > > >> On May 25, 2022, at 2:57 AM, Sourpis, Anastasios via Chimera-users <chimera-users(a)cgl.ucsf.edu> wrote: > > >> > > >> Dear All, > > >> > > >> I would like to ask about the hydrogen bonds' built-in configuration > > >> of CHIMERA. > > >> > > >> Can I possibly have some insight into how it works? > > >> > > >> Regarding the distance and angle constraints do you have any > > >> graphical representation of the conditions. > > >> > > >> I would like to attach a figure and ask if this is the correct > > >> applying configuration regarding the distance and the angle > > >> (hbonds_lst.pdf). > > >> > > >> > > >> Also, I would like to share with you the output > > >> when I compare gmx hbond using GROMACS and > > >> chimera. > > >> > > >> ATTENTION: using gmx hbond I have the connected atoms > > >> via hydrogen, but the two configurations are essentially > > >> different (chimera_(molecules).tga and gromacs_atomonly.tga). > > >> > > >> Thank you in advance. > > >> Kind regards, > > >> Tasos Sourpis > > > > > > > > > _______________________________________________ > > > Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu > > > Manage subscription: https://www.rbvi.ucsf.edu/mailman/listinfo/chimera-users

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how to solve the problem of topology
by Kenji MATSUI 31 May '22

31 May '22

Dear Chimera Thank you for your support the other day. I also apologize for contacting you outside of business hours due to the time difference. Excuse me, I have a question about the issue of ligand topology for the docking study. ligand: 25-hydroxy cholesterol The topology did not match when I used this ligand for the docking study. Could you tell me how to solve this problem? The thing I tried 1. I tried to add hydrogen atoms on UCSF Chimera by following the URL below, but it did not work Reference: https://www.swissparam.ch/SwissParam_gromacs_tutorial.html 2. I tried to change the conformation of the C23-24 part, but the situation won't be changed. Reference:< https://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/editing/editing.… > --------------------------------------------------------------------------- Kenji Matsui Graduate School of Tokyo University of Agriculture and Technology M2 2-24-16, Nakamachi, Koganei-shi, Tokyo 184-8588, Japan Mail: s214903z(a)st.go.tuat.ac.jp

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Drawing a set of spheres describing a pocket in a protein
by svle＠tiscali.it 30 May '22

30 May '22

Hi all, I would like to draw a set of colored and transparent spheres that describes a pocket knowing the coordinates of the center and the radius for each of these shapes. For example: radius: 0.7777, y: 18.333, x: -23.99, z: -64.765 and so on. Can you suggest me a way to do this. Thanks. Saverio Voucher MISE per P.IVA e PMI: fino a 2500€ per la Banda Ultralarga. https://casa.tiscali.it/promo/?u=https://promozioni.tiscali.it/voucher_busi…..

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Fwd: [chimerax-users] relative position of a marker
by C.J. 25 May '22

25 May '22

Thank you both Tom and Elaine. I just test the command but it doesn't work. See attached picture. Elaine Meng <meng(a)cgl.ucsf.edu> 于2022年5月25日周三 11:45写道： > Hi Jianhao, > It depends what you mean by relative position. If you mean distance, one > way would be to place a marker at the map center and then measure distance > between it and the marker you already have. > > You can place a marker at map center with "measure center" and the "mark > true" option: > <https://rbvi.ucsf.edu/chimerax/docs/user/commands/measure.html#center> > > ....or at specific coordinates such as 0,0,0 with "marker" and the > "position" keyword to specify a point: > <https://rbvi.ucsf.edu/chimerax/docs/user/commands/marker.html#create> > > Then you can select the two markers (same as atoms) with Ctrl-click, > Shift-Ctrl-click and then use command "distance sel": > <https://rbvi.ucsf.edu/chimerax/docs/user/commands/distance.html> > > Or regardless of whether you wanted to measure any distances, you can save > the marker(s) to file and just look at the file with a text-editor to see > what its coordinates are: > <https://rbvi.ucsf.edu/chimerax/docs/user/markers.html> > > I hope this helps, > Elaine > ----- > Elaine C. Meng, Ph.D. > UCSF Chimera(X) team > Department of Pharmaceutical Chemistry > University of California, San Francisco > > > On May 25, 2022, at 7:54 AM, C.J. via ChimeraX-users < > chimerax-users(a)cgl.ucsf.edu> wrote: > > > > Hi, > > I place a marker in a cryoEM map with "Volume Tracer" tool. How can I > know the relative position of the marker to the origin or center of the > map? Thank you! > > Best, > > Jianhao > >

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