November 2016 - Chimera-users - RBVI Mailing Lists

Rotating marker sets
by Kacher, Joshua P 22 Nov '16

22 Nov '16

Hello, Is there a way to rotate marker sets? I have a 3D crystal system that is defined by a hexagonal coordinate system. I can load in a marker set in the form of a hexagon to act as the coordinate axes, but I need to then rotate the marker set to align it with my system. So far, I've only been able to see how to move one marker at a time, not the entire marker set. Thanks, Josh -- Josh Kacher Assistant professor Georgia Institute of Technology KacherLab.gatech.edu

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Render by Attribute - Radii and individual radius for each HETATM
by Kuda Ondřej 22 Nov '16

22 Nov '16

Hello, I have a path (chain of heteroatoms with defined radii, see below) forming a pore in a protein. I would like to create an envelope (surface view) to illustrate the 3D path within the protein. My problem is that Chimera uses default vdw value and not the values I defined. Therefore, the "pore" has a constant diameter. According to https://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/render/render.htm… , I tried "Render by Attribute - Occupancy - Radii". I assumed that the VDW values are rendered for each HETATM according to the input, but it seems that the VDW values are sorted (smallest > largest) and then applied on the chain starting from #1. Therefore, it creates kind of a funnel structure. Could you please suggest how to create this tunnel with variable width? Thank you. Best, Ondrej REMARK ATOM NAM RES TUNID X Y Z Distnm RadiusA HETATM 1 X TUN T 1 -45.770 -35.888 -4.154 0.00 2.01 HETATM 2 X TUN T 1 -45.766 -35.893 -4.132 0.02 2.03 HETATM 3 X TUN T 1 -45.762 -35.897 -4.111 0.04 2.11 HETATM 4 X TUN T 1 -45.759 -35.901 -4.091 0.07 2.16 HETATM 5 X TUN T 1 -45.756 -35.903 -4.073 0.08 2.14 HETATM 6 X TUN T 1 -45.755 -35.903 -4.057 0.10 2.17 HETATM 7 X TUN T 1 -45.756 -35.901 -4.045 0.11 2.10 HETATM 8 X TUN T 1 -45.758 -35.896 -4.037 0.12 2.01 HETATM 9 X TUN T 1 -45.763 -35.888 -4.032 0.13 2.01 HETATM 10 X TUN T 1 -45.770 -35.876 -4.033 0.15 2.00 HETATM 11 X TUN T 1 -45.779 -35.861 -4.037 0.16 1.99 HETATM 12 X TUN T 1 -45.787 -35.843 -4.039 0.18 1.97 HETATM 13 X TUN T 1 -45.794 -35.822 -4.034 0.21 1.95 HETATM 14 X TUN T 1 -45.796 -35.800 -4.017 0.23 1.93 HETATM 15 X TUN T 1 -45.792 -35.777 -3.984 0.27 1.92 ________________________________ This email was scanned by Bitdefender Upozornění: Není-li v této zprávě výslovně uvedeno jinak, má tato E-mailová zpráva nebo její přílohy pouze informativní charakter. Tato zpráva ani její přílohy v žádném ohledu Fyziologický ústav AV ČR, v. v. i. k ničemu nezavazují. Text této zprávy nebo jejích příloh není návrhem na uzavření smlouvy, ani přijetím případného návrhu na uzavření smlouvy, ani jiným právním jednáním směřujícím k uzavření jakékoliv smlouvy a nezakládá předsmluvní odpovědnost Fyziologického ústavu AV ČR, v. v. i. Disclaimer: If not expressly stated otherwise, this e-mail message (including any attached files) is intended purely for informational purposes and does not represent a binding agreement on the part of Institute of Physiology CAS. The text of this message and its attachments cannot be considered as a proposal to conclude a contract, nor the acceptance of a proposal to conclude a contract, nor any other legal act leading to concluding any contract; nor does it create any pre-contractual liability on the part of Institute of Physiology CAS.

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read dcd from openMM simulations
by Michał Kadlof 22 Nov '16

22 Nov '16

Is there any way to read dcd trajectory from openMM simulation? Example in attachment. OpenMM does not produce psf or prmtop files :( -- pozdrawiam serdecznie Michał Kadlof <m.kadlof(a)cent.uw.edu.pl>

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Reflection symmetric
by Grzegorz Bokota 22 Nov '16

22 Nov '16

Hi, I need to apply isometry and shift to volume data. In cmap file format it is possible to do rotation but to have isometry I need to can do symmetric reflection. Ir is possible with any chimera format? I found that there is "symmetries" parameter in cmap file format, but i do not seen any effect. Sincerely, Grzegorz Bokota

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merging maps
by Elaine Meng 21 Nov '16

21 Nov '16

> On Nov 21, 2016, at 6:46 AM, Ignatiou, Athanasios <athanasios.ignatiou.13(a)ucl.ac.uk> wrote: > > Hello Elaine, > I have a quick question: > do you know how to merge 2 separate cryo-EM maps (of the same object which are are scale correctly) into one new cryo-EM map in Chimera. > cheers > Thanos Hello Thanos, If by merging you mean simply adding the values, take a look at the “vop” (volume operations) command. It includes “vop add” and several other subcommands: <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/vop.html> We recommend sending Chimera questions to the chimera-users(a)cgl.ucsf.edu address (CC’d on this message). I hope this helps, Elaine ---------- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco

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surface transparency to particular residues
by chemocev marker 20 Nov '16

20 Nov '16

HI All I am completely new to chimera and I am wondering if there is a way to set the surface transparency to just a particular region, not to the whole surface. best Jiri

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scrolling
by Dougherty, Matthew T 18 Nov '16

18 Nov '16

I want to completely avoid changing the scale factor keeping it at 1.0. Instead I want to rely on z translation of the camera. I disable scrolling on the mouse in the chimera preferences. This works. On my Mac laptop I am noticing zoom on the trackpad changing the scale factor. How do I stop that? I have zoom disabled in Mac system preferences. Matthew Dougherty National Center for Macromolecular Imaging Baylor College of Medicine ================================================= =================================================

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REST Server
by Anatoly Chernyshev 18 Nov '16

18 Nov '16

Hello, is there a way to specify a port number when starting REST Server? Thank you. Anatoly

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Chimera-Modeller interface, template selection
by Dina Schneidman 17 Nov '16

17 Nov '16

Hi, Currently it is only possible to select a template from PDB based on the PDB code. Would it be possible to have an option to use one of the currently open PDB files in Chimera? Thanks! Dina

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split ligands and H-bonds
by Markus Heller 16 Nov '16

16 Nov '16

Hi, I have a structure of a complex (I tried with several, but here's one example: 3t07). I want the stick radii for protein and ligand to be different, so I "split ligands" and then set the stick scale in the attributes of the respective model. When I then try to detect H-bonds between the ligand and the protein, none are found! They are found, however, when detecting them prior to splitting the model with "split ligands". I've tried several settings in the Find Hbond dialog: Find inter-model, intra-model, both: no difference. Restrict to the models the H-bonds are between: no difference. Select the ligand and the protein residue participating in the H bonds and using "Only find H bonds with both ends selected": nothing, no H bonds found. Why is that? Thanks and Cheers Markus

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Chimera-users November 2016