- Chimera-users - RBVI Mailing Lists

Re: [Chimera-users] matching peptides with altenate locations
by Elaine Meng 15 Dec '09

15 Dec '09

Hi Sumitro, I work on a Mac and cannot open the winmail.dat file. Can you just send the two PDB files as attachments, or if they are in the public database, tell me what the PDB ID codes are? Thanks, Elaine

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FindHBond
by Greg Friedland 15 Dec '09

15 Dec '09

Hello, I'm new to Chimera and just discovered the FindHBond tool. This tool seems very useful, but unfortunately it draws hbonds between the heavy atoms even when I have hydrogens added. Is there a way to configure this behavior? I'd like the hydrogen bonds to be drawn between the hydrogen and the acceptor atom. It looks rather strange now, especially for the hbonds with relaxed constraints that deviate significantly from the angle made by the hydrogen. See the attached tiff for an example. Also, I'm curious what cutoffs are used. I looked at http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/findhbond/findhbon… but I was hoping for more details. I.e what numbers from the paper are used for the proton-acceptor distances, donor-proton-acceptor angle and the corresponding dihedral angle. Thanks! Greg Friedland Postdoc Joint BioEnergy Instute Sandia National Lab Formerly of Tanja Kortemme's lab at UCSF

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hello!
by gytjyb 15 Dec '09

15 Dec '09

hello! i am a fleshman for this software! can you tell me about this software ,if all the thing is free? how can i minimize a energy and refine for a protein structure? i also want to do a mutation,how can i do? thank you very much!

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help in installation of chimera-1.4-linux_x86_64.exe
by Dr Muhammad Nadeem Kardar 14 Dec '09

14 Dec '09

chimera-1.4-linux(2).exe chimera-1.4-linux.exe chimera-1.4-linux_x86_64.exe I have three files of chimera but unable to execute chimera kindly help Kardar -- M. Nadeem Kardar, PhD Assistant Professor Department of Chemical Engineering COMSATS Institute of Information Technology Defence Road Off Raiwind Road, Lahore, Pakistan Cell# +92-300-2414231 Email: drmnkardar(a)ciitlahore.edu.pk Website: http://www.ciitlahore.edu.pk/researchgroups/bcrg/page/kardar.html

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File conversion question
by Miriam Gochin 12 Dec '09

12 Dec '09

I have a series of docked ligands produced by AutoDock (as .dlg files, containing more than one conformer per ligand) and I would love to be able to view these ligands using the ViewDock utility in Chimera. Is there a file conversion protocol? Thanks so much, Miriam Gochin Touro University - CA miriam.gochin(a)tu.edu 707-638-5463

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image size
by Bala subramanian 11 Dec '09

11 Dec '09

Friends, What is the best way to generate an image of fixed size. Say i want to create an image of 4,4 (width, height) at 300dpi. I tried the following windowsize 1200 1200 When i go to save image--> I saw the pixel width and height changed as *1200, 618* ( I dnt understand why this changes although i set as 1200 1200). So i set the print unit as 'inches', then i entered width and height as 4,4. The final image that it produced has different width and height (4, 6.13). Thanks, Bala

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Curves+ output files
by David Chenoweth 10 Dec '09

10 Dec '09

Problem solved! Sorry, but it seems all I needed to do was show the atoms and bonds. Chimera is reading the file it just doesn't show anything until you tell it to show atoms and bonds. Another surprise with the new Chimera version is that it automatically displays my nucleic acid files with slab bases, filled sugars, and a backbone ribbon. Is there anyway to shut this off so I don't have to go in and manually do it each time I open a nucleic acid structure? Thanks, Dave -------------------------------------------------------- David Chenoweth NIH Postdoctoral Fellow Swager Research Group Massachusetts Institute of Technology Chemistry Department, 18-053 77 Massachusetts Avenue Cambridge, MA 02139 Email: dcheno(a)mit.edu Lab Phone: 617-258-6537 --------------------------------------------------------

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Curves+ output files
by David Chenoweth 10 Dec '09

10 Dec '09

Hi! I have been using a program called Curves for analyzing nucleic acid crystal structures for quite a while and I have always used Chimera to visualize the output pdb. One file shows the backbone splines and the vectors defining the nucleic acid groove widths (r+bdna_b.pdb) and the other file shows the nucleic acid helical axis (r+bdna_X.pdb). Chimera has always been able to read both of these files until the recent production release where it is no longer able to read the r+bdna_b.pdb file. I have attached the two files and the actual DNA pdb file. Can you please help me fix the problem with reading the r+bdna_b.pdb file in the new production release? Thanks, Dave -------------------------------------------------------- David Chenoweth NIH Postdoctoral Fellow Swager Research Group Massachusetts Institute of Technology Chemistry Department, 18-053 77 Massachusetts Avenue Cambridge, MA 02139 Email: dcheno(a)mit.edu Lab Phone: 617-258-6537 --------------------------------------------------------

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creating additional coordinates to save from BIOMT records
by Irene Newhouse 09 Dec '09

09 Dec '09

I'm working with a pdb structure that's icosahedral. The surface is tiled with hexamers and pentamers of its single chain. The unit cell contains 4 chains, 3 from a hexamer and 1 from a pentamer. I need to compare the pentamer inter-chain contacts to those in the hexamer, so I immediately thought of Chimera. I can generate a pretty picture of hexamers & pentamers on screen, but what I can't seem to figure out how to do is to save additional coordinates for the other units of the pentamer, analogous to saving additional coordinates when you fill out a unit cell using the "Higher-order Structure" utilities. Thanks for your help! Irene Newhouse Res. Corp. U of Hawaii _________________________________________________________________ Windows 7: Unclutter your desktop. Learn more. http://www.microsoft.com/windows/windows-7/videos-tours.aspx?h=7sec&slideid…

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isosurface
by Bala subramanian 09 Dec '09

09 Dec '09

Friends, I have calculated the electrostatic-potential map using APBS program. I can use the 'electrostatic colouring' to colour my protein but i want to display the +ve and -ve isosurface. Kindly write me how to do the same. Thanks, Bala

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