- Chimera-users - RBVI Mailing Lists

Sequence-structure associations
by Hernando J Sosa 09 Jul '20

09 Jul '20

Dear Chimera, Chimera sequence-structure associations appears to be limited to one association per model. Is this right? and if not how do you modify this? E.g. with a model PDB structure containing 3 chains A,B and C you could open the multialign viewer and align the three sequences corresponding to A B and C. However, it appears that only one of the three sequences in the multialign viewer can be associated with their respective chain in the structure. You could change the association but it seem that you cannot add more associations. Here is a view of the associations dialogue windows. Note that it shows only one entry even when there are three sequences in the multialign viewer window. ?? [cid:45cbe218-a6f2-4490-be08-b52fbb7a30e2] Thanks Hernando ___________________________________

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Chimera X - Windows 7 home premium
by MONICA MESA CADAVID 08 Jul '20

08 Jul '20

I would like to use the new Chimera X. I installed and open the program easily. But the images did not appear. I attach the information of my computer because I would like to know if I can fix the problem. Thank you [image: image.png] *Monica Mesa Cadavid* Profesor Titular Instituto de Quimica Facultad de Ciencias Exactas y Naturales monica.mesa(a)udea.edu.co Grupo Ciencia de los Materiales Sede de Investigacion Universitaria, SIU -Torre 1, laboratorio 310 Cra 53 # 61 - 30 Tel. 574 - 219 6546 [image: http://www.udea.edu.co/] <http://www.udea.edu.co/> *Universidad de Antioquia* www.udea.edu.co Sede Principal: Cll 67 # 53 - 108 Medellín, Colombia "La información aquí contenida es para uso exclusivo de la persona o entidad de destino. Está estrictamente prohibida su utilización, copia, descarga, distribución, modificación y/o reproducción total o parcial, sin el permiso expreso de Universidad de Antioquia, pues su contenido puede ser de carácter confidencial y/o contener material privilegiado. Si usted recibió esta información por error, por favor contacte en forma inmediata a quien la envió y borre este material de su computador. Universidad de Antioquia no es responsable por la información contenida en esta comunicación, el directo responsable es quien la firma o el autor de la misma." -- "La información aquí contenida es para uso exclusivo de la persona o entidad de destino. Está estrictamente prohibida su utilización, copia, descarga, distribución, modificación y/o reproducción total o parcial, sin el permiso expreso de Universidad de Antioquia, pues su contenido puede ser de carácter confidencial y/o contener material privilegiado. Si usted recibió esta información por error, por favor contacte en forma inmediata a quien la envió y borre este material de su computador. Universidad de Antioquia no es responsable por la información contenida en esta comunicación, el directo responsable es quien la firma o el autor de la misma."

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Assigning id to a chain with no id
by Aleena Jose 08 Jul '20

08 Jul '20

Hi, I need help with chimera. In my pdb I have a chain with no id and I want to assign it a new id. I tried using 'changechain' command but I am getting error messages because I don't have any specific from-chain id. I don't know what exactly to give as from-chain id or is there any other command that could help me? Thanks, Aleena.

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Difference in alignment of cofactor between Chimera and ChimeraX
by Derek Harris 07 Jul '20

07 Jul '20

Hello, I am trying to reproduce an alignment I had previously done in Chimera in ChimeraX with matchmaker command. The protein alignment between the two programs is the same, but in ChimeraX the active-site cofactor of the matchstruct isn't aligning appropriately to the refstruct cofactor and is unreasonably placed in relation to even its own protein. In Chimera the two cofactors align nicely. The two structures I am trying to align are 3U7Q and 5N6Y. Thanks in advance for any assistance you can offer! Derek Harris Postdoctoral Fellow Seefeldt Lab Department of Chemistry and Biochemistry Utah State University

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Select zone around COM
by Yasser Almeida 06 Jul '20

06 Jul '20

Hello, I have a trajectory of a water box and I want to select, show only, save the waters that move in a zone around the COM of the whole system. Any thoughts? Thanks in advance, Yasser

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Chimera add H to NAD
by Peter Palenchar 03 Jul '20

03 Jul '20

Hi, I have an NAD coming from a PDB file. When I add H to it, Chimera has issues with the nicotinamide ring. It isn't seeing the ring as aromatic. I've saved the NAD without adding H as a .mol2 file and tried to edit it so that it would be seen by Chimera as being aromatic, but it is still adding 2 H's to some of the C in the ring that only should one. I've attached the mol2 file that I've edited. I've also tried to edit the .mol2 file where I've changed the C in the ring to C.2 and changed the bonds to double bonds (e.g. N1N, atom 36, and C2N, atom 37, have a double bond, C2N also has a single bond to C3N, and C2N is assigned C.2, but when I add H Chimera still puts two H on C2N). I can add the H and then delete the extra ones in Chimera, but then the bond angle for the remaining H is wrong. Ideally, I'd get Chimera to see the system as aromatic. But I'll take any input on the best way to start with a structure like this and get Chimera to create something that is close to NAD. Thanks! Peter Palenchar

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Chimera help - attempted to do minimization
by Jia Hao Chen 02 Jul '20

02 Jul '20

Hello, I attempted to do minimization on my mutant protein but I get this error when I try to run it: AttributeError: '_molecule.Atom' object has no attribute 'gaffType' File "C:\Program Files\Chimera 1.14\share\MMMD\MMTKinter.py", line 695, in _addStandardResidue "amber_atom_type": a.gaffType, I've attached the reply log for more details. Please let me know if I need to fix anything, thank you. Best regards, Jay Chen

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Chimera Molecular Dynamics
by Benjamin Strickland 01 Jul '20

01 Jul '20

Hello, I have recently started playing around with the MD tool in chimera, however I have noticed something odd. I set up the simulation and begin running it however, upon completion of the initial minimization I reach the "MMTK updated coordinates" step and heating.nc files appear on the desktop. However, after this point the application has a (not responding) and there appears no be very little usage of the CPU. I am unsure if something is going wrong or I have to simply wait longer as I see no indication of any pending process or status. I am running Windows 10 and the CPU is a AMD Threadripper 3960x.

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(no subject)
by Rohan Marde 01 Jul '20

01 Jul '20

How can I make comments on specific residues in UCSF Chimera?

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Re: [Chimera-users] Euler Angles
by Tom Goddard 30 Jun '20

30 Jun '20

Hi Gabriella, Euler angles are not rotations about x, y, and z. Rotations about x,y,z and also Euler angles are generally not very useful for explaining relative orientations of domains because they are hard for a person to comprehend and depend on the coordinate system. It is particularly tricky because the order of the rotations matters, for instance, a rotation of 30 degrees about x followed by 30 degrees about y is different from 30 degrees about y followed by 30 degrees about x. So usually just the total rotation about the axis of rotation is reported and that is what Chimera tells you, If you still want Euler angles or x,y,z rotations Chimera does not produce those and you will need to find other software to do it. Tom > On Jun 30, 2020, at 7:06 AM, Gabriella Angiulli <gab.ang87(a)hotmail.com> wrote: > > Hi Tom, > > What I need to do is calculating the transformation (rotation and translation) of the same domain in two different conformations. Particularly, I would like to describe the rotation as rotational angles around the three axis (x,y and z). I know that Chimera provide for the rotational angle, but what I would like to know is the Euler angels. > Thank you so much, > Gabriella > > >> On Jun 29, 2020, at 4:45 PM, Tom Goddard <goddard(a)sonic.net <mailto:goddard@sonic.net>> wrote: >> >> Hi Gabriella, >> >> Chimera does not output and does not use Euler angles as described in this previous message >> >> http://www.cgl.ucsf.edu/pipermail/chimera-users/2017-November/014102.html <http://www.cgl.ucsf.edu/pipermail/chimera-users/2017-November/014102.html> >> >> What software are you using that wants Euler angles? There are different conventions in how Euler angles are defined. >> >> Tom >> >> >>> On Jun 29, 2020, at 8:36 AM, Gabriella Angiulli <gab.ang87(a)hotmail.com <mailto:gab.ang87@hotmail.com>> wrote: >>> >>> Hi, >>> >>> I’m trying to calculate the transformation between two Cterminal domains in two different conformations and I’ve been using the command “measure rotation”. The rotation is reported in the first three columns of a 4x3 matrix in the log file window and my question is: do I have a way to get the Euler angles of my transformation from that matrix ? >>> >>> Thank you so much, >>> Gabriella >>> >>> >>> _______________________________________________ >>> 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> >>> >> >

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