July 2021 - ChimeraX-users - RBVI Mailing Lists

Python/Pip Inquiry - ChimeraX - Nathan Wood
by Nathan Wood 05 Jul '21

05 Jul '21

Dear ChimeraX With regards to the python and pip utilities organic to ChimeraX, is it possible to use the conda installed modules within the same script executed by ChimeraX? When running the script through ChimeraX I return an error that the module is not found. The module was installed using "pip install -e . " while in the conda environment. When I attempted this using the pip provided in ChimeraX Daily Release (22/06/2021, Generic X64 Linux) I return the error: /"/tmp/chx-develop.eKjBho/ChimeraX.app/bin/python3.8: bad interpreter: No such file or directory"/ This error can be resolved if I modify the /"#!"/ at the beginning of the pip in a text editor to the python3.8 found within ChimeraX, with pip installing correctly, but ChimeraX still returning that the module is not found. Furthermore I believe this method is not sound. Any assistance would be appreciated Very Respectfully, Nathan Wood

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Is the toolshed server down?
by tolung.bio＠gmail.com 05 Jul '21

05 Jul '21

Hi, From https://cxtoolshed.rbvi.ucsf.edu/ I am getting Service Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later. _____ Apache/2.4.6 (CentOS) Server at cxtoolshed.rbvi.ucsf.edu Port 443 Is this something on my side, or a known issue that is being resolved? Is there an alternative way for installing the tools, when this happens? Best, Gökhan

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how to change the radius of loop
by Wen-Jin Winston Wu 02 Jul '21

02 Jul '21

Hello, Does anyone know how to modify the radius of loops? I am trying to show structural difference between the three aligned proteins with the cartoon helices shown as tubes. However, when I reduced the helix radius from 2 to 1 ( "cartoon style modeh tube rad 1 sides 24"), the radius of a helix is only about twice that of a loop/coil. Also, what does the number "24" do in the "sides 24"?. I could not find the description on this on ChimeraX Any help will be appreciated. Thanks, Best wishes, Winston

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Re: [chimerax-users] Generating surfaces from a specific selection
by Eric Pettersen 01 Jul '21

01 Jul '21

Hi Diego, If there are interior voids within the structure your main surface is enclosing, there will be "bubbles" like what you're seeing, where solvent (or possibly larger things) could theoretically be contained. If you want to only create the outermost surface and not any of the interior void surfaces then add "visiblePatches 1" to your surface command, and only the single largest surface will be created. --Eric > On Jun 30, 2021, at 8:32 AM, Diego Amaya <diaamayaram(a)unal.edu.co> wrote: > > Hi Eric, > > Thanks for your fast reply. The script works but I identify a "weird behavior" in some surfaces. In some cases, you can find "isolated spheres" and if you superimpose them with the corresponding entire surface, these spheres are buried in the structure. All the pdb files have the same atom order and there are no waters, ions or other molecules. The structure is composed of two protein chains. I tried several probeRadius and gridSpacing values but the problem stays. Any suggestions ? > > Best regards, > > > > > El mar, 29 jun 2021 a las 22:58, Eric Pettersen (<pett(a)cgl.ucsf.edu <mailto:pett@cgl.ucsf.edu>>) escribió: > Hi Diego, > It's impossible to be 100% certain without knowing exactly which line it crashed in, but my strong suspicion is that the long atom spec you generate overran some limit in the atom spec or command parser and resulted in a crash. I will be investigating in more detail later, but working off that assumption I would change your script to directly select the atoms in Python rather than via a command. I'm going to assume the atoms in your PDB files are always in the same order, and that the structure is the only model open. If so, change these lines in the 'if' block: > > cur_sel = selected_atoms(session).unique_structures[0].atoms.serial_numbers > for a in cur_sel: > list_atoms.append('@@serial_number='+str(a)) > sel_atoms = ' | '.join(list_atoms) > > to: > > selected = session.models[0].atoms.selecteds > > and these lines in the 'else' block: > > rc(session, 'sel {}'.format(sel_atoms)) > rc(session, 'surface {} enclose #1'.format(sel_atoms)) > to: > > session.models[0].atoms.selecteds = selected > rc(session, 'surface sel enclose #1') > --Eric > > Eric Pettersen > UCSF Computer Graphics Lab > > >> On Jun 29, 2021, at 10:00 AM, Diego Amaya via ChimeraX-users <chimerax-users(a)cgl.ucsf.edu <mailto:chimerax-users@cgl.ucsf.edu>> wrote: >> >> Hello, >> >> I have a pdb trajectory of 50 frames (in separated pdb files). I want to generate only the solvent accessible surface around amino acid 31 within a radius of 15 A. I want to use the same set of atoms when generating each surface with respect to the first frame of the trajectory. I'm using the python script here below but it doesn't work, I get a segmentation error in the else block. It works if I use "rc(session, 'surface zone #1.1 nearAtoms :{} distance {}'.format(resid, radius))" in the else block but in that way I don't use exactly the same atoms each time. Any suggestions? >> >> Thanks in advance. >> >> Here the code : >> >> ########################################################### >> from chimerax.core.commands import run as rc >> >> def get_surfaces(resid, radius): >> from chimerax.core.commands import run as rc >> from chimerax.atomic import selected_atoms >> >> with open('list_pdbs.txt', 'r') as list_pdbs: >> flag = 0 >> for pdb_file in list_pdbs: >> if flag == 0: >> list_atoms = [] >> rc(session, 'open ' + pdb_file.strip()) >> rc(session, 'sel :{} @<{}'.format(resid, radius)) >> cur_sel = selected_atoms(session).unique_structures[0].atoms.serial_numbers >> for a in cur_sel: >> list_atoms.append('@@serial_number='+str(a)) >> sel_atoms = ' | '.join(list_atoms) >> rc(session, 'surface #1 enclose #1') >> rc(session, 'surface zone #1.1 nearAtoms :{} distance {}'.format(resid, radius)) >> rc(session, '~ribbon') >> rc(session, '~disp') >> rc(session, "save {}_resid_{}_radius_{}.stl format stl".format(pdb_file.strip()[:-4], resid, radius)) >> rc(session, 'surface close') >> rc(session, '~sel') >> rc(session, "close all") >> flag = 1 >> else: >> rc(session, 'open ' + pdb_file.strip()) >> rc(session, 'sel {}'.format(sel_atoms)) >> rc(session, 'surface {} enclose #1'.format(sel_atoms)) >> rc(session, '~ribbon') >> rc(session, '~disp') >> rc(session, "save {}_resid_{}_radius_{}.stl format stl".format(pdb_file.strip()[:-4], resid, radius)) >> rc(session, '~sel') >> rc(session, 'surface close') >> rc(session, "close all") >> >> resid = 31 >> radius = 15 >> >> get_surfaces(resid, radius) >> rc(session, "quit") >> ############################################################# >> >> >> -- >> Diego A. Amaya Ramírez >> >> Aviso legal: El contenido de este mensaje y los archivos adjuntos son confidenciales y de uso exclusivo de la Universidad Nacional de Colombia. Se encuentran dirigidos sólo para el uso del destinatario al cual van enviados. La reproducción, lectura y/o copia se encuentran prohibidas a cualquier persona diferente a este y puede ser ilegal. Si usted lo ha recibido por error, infórmenos y elimínelo de su correo. Los Datos Personales serán tratados conforme a la Ley 1581 de 2012 y a nuestra Política de Datos Personales que podrá consultar en la página web www.unal.edu.co <http://www.unal.edu.co/>. Las opiniones, informaciones, conclusiones y cualquier otro tipo de dato contenido en este correo electrónico, no relacionados con la actividad de la Universidad Nacional de Colombia, se entenderá como personales y de ninguna manera son avaladas por la Universidad. >> _______________________________________________ >> ChimeraX-users mailing list >> ChimeraX-users(a)cgl.ucsf.edu <mailto:ChimeraX-users@cgl.ucsf.edu> >> Manage subscription: >> https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users <https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users> > > > > -- > Diego A. Amaya Ramírez > > Aviso legal: El contenido de este mensaje y los archivos adjuntos son confidenciales y de uso exclusivo de la Universidad Nacional de Colombia. Se encuentran dirigidos sólo para el uso del destinatario al cual van enviados. La reproducción, lectura y/o copia se encuentran prohibidas a cualquier persona diferente a este y puede ser ilegal. Si usted lo ha recibido por error, infórmenos y elimínelo de su correo. Los Datos Personales serán tratados conforme a la Ley 1581 de 2012 y a nuestra Política de Datos Personales que podrá consultar en la página web www.unal.edu.co <http://www.unal.edu.co/>. Las opiniones, informaciones, conclusiones y cualquier otro tipo de dato contenido en este correo electrónico, no relacionados con la actividad de la Universidad Nacional de Colombia, se entenderá como personales y de ninguna manera son avaladas por la Universidad.

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ChimeraX-users July 2021