- Chimera-users - RBVI Mailing Lists

Re: [Chimera-users]
by Eric Pettersen 09 Aug '05

09 Aug '05

Hi Sabuj, It is the indentation. In Python, indentation is meaningful and statements at the same "level" have to have the same indentation. I've appended the critical part below. Note the the "self.rulerTexts..." and "x += ..." statements are indented one space further than the preceding if/else and "text = ..." statements. To Python, the extra space starts a new indented block of statements, which is only legal after 'if' statements and so forth. Take a space away from the front of the last two statements and I think things will work. --Eric for chunkStart in range(self.seqOffset, end, 10): seq1index = self.seqs[0].gapped2ungapped (chunkStart) if seq1index is None: dispText = "?" else: dispText = str(seq1index+1) text = self.mainCanvas.create_text(x, y, anchor='s', font=self.font, text="%s" % (dispText)) self.rulerTexts.append(text) x += self.chunkGap + 10 * (self.fontPixels[0] + self.letterGaps[0])

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by Pattanayek, Sabuj 09 Aug '05

09 Aug '05

Hi all, Is there a modification I can do to the multi-align viewer code so that "-" (gaps) characters are not counted in the alignment numbering (but are still displayed for alignment purposes) from a fasta file in the multi-align viewer? The numbering should correspond to the first sequence found in the fasta file (i.e. I don't care about the numbering due to gaps in the second, third, etc sequences). Thanks, Sabuj Pattanayek

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Making and Breaking bonds in Chimera
by David Chenoweth 04 Aug '05

04 Aug '05

Dear Chimera users, Does anyone know how to make a new bond or delete a bond between two atoms within a PDB file using chimera? -Thanks DC

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Coloring by Delphi potential in Chimera
by Elaine Meng 29 Jul '05

29 Jul '05

Hi Zach, DelPhiViewer got removed because other tools can do the same things in a more general and flexible way. Unfortunately in the latest snapshot (1.2129, June) it is confusing to get to these newer features, but they are all there, and I'll explain how. I'll assume you are using that latest snapshot and that you have an electrostatic potential file in the format from DelPhi. ------------------- First, open the electrostatic potential file with File... Open. If the file is named ending in .phi you can set the File type to "all (guess type)" or "DelPhi or GRASP potential". This will automatically start Volume Viewer. (A) IF you want to look at contour (isopotential surfaces), keep using Volume Viewer. Open the Volume Viewer man page by clicking the Help button on the dialog. You probably want to go to the "Surface or Mesh" section of the man page, under "Display Panel". Otherwise... (B) IF you want to color the molecular surface or GRASP surface based on the potential, click the Unshow button on Volume Viewer and then the Close button on Volume Viewer. Open the molecule and show its surface that you want to color, or open the GRASP surface you want to color (this can also be opened with File... Open). The tool for coloring a surface by potential is Surface Color (Tools... Surface/Binding Analysis... Surface Color). Pick the surface of interest from the menu next to "Color surface" and choose the electrostatic potential data from the menu next to "Using volume data or geometry". You probably want to change the "Color scheme" to "3 color symmetric" - then you have something similar to the DelPhiViewer surface coloring interface. Click the Help button on the Surface Color dialog if you want to see the man page. -------------------- We realized this is pretty confusing and have tried to make it better (and the improvements will show up in the next release). The improvements are that you will be able to color a surface according to electrostatic potential by choosing Tools... Surface/Binding Analysis... Electrostatic Surface Coloring, and then you can open the electrostatic potential using a Browse button on that tool (avoiding Volume Viewer entirely). It will also start with the 3-color scheme when opened this way. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. meng(a)cgl.ucsf.edu UCSF Computer Graphics Lab and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco http://www.cgl.ucsf.edu/home/meng/index.html

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[Chimera-users] coloring of nearly identical protein sequences in multialign viewer
by Sabuj Pattanayek 29 Jul '05

29 Jul '05

Hi all, I have a clustal aln file or a fasta file with two nearly identical aligned protein sequences. When I view them in the multialign viewer I would like to change the color of the consensus style. That is, residues which are both identical should be just black (rather than red and capitalized) and residues that are not identical should be red (or some other color that contrasts against black). Is there anyway to do this? Better yet would it be possible to not use the consensus at all and color the entire non-matching column a color of my choice? Thanks, Sabuj Pattanayek

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gopenmol files in chimera?
by syma 25 Jul '05

25 Jul '05

HI, I was just wondering if it is possible to import gopenmol plt files in chimera either directly or by going through a (freely available) conversion code? Thanks in advance for your help, -Syma *************************************************** Dr Syma Khalid Lab. of Molecular Biophysics, Department of Biochemistry, University of Oxford South Parks Road, Oxford OX1 3QU U.K. ***************************************************

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insertion codes and residue selection
by Moo Cow 11 Jul '05

11 Jul '05

I would be very grateful for advice. Some coordinates contain residue 51 residue 51A (a residue with an insertion code) If I select #0:51 then both residues are selected. Is there any way to persuade chimera to just select residue 51, but not 51A ? Many thanks -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm

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How to append functional groups to a residue
by C. Parry 02 Jul '05

02 Jul '05

Hi Chimera Peoples - My question is how does one append a functional group (say, nitro, bromine, ..., or metal) to a residue (say, tyrosine, ..., adenine). This would involve replacing some atom or group. I am aware of 'swapa,' 'swapna' commands but these are straight forward one-for-one changes of whole residues. Thanks. C. Parry __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Exporting 3D File Formats
by peter allen 30 Jun '05

30 Jun '05

Hello, Does your software have any way of exporting 3d file formats. DXF OBJ 3DS IGES STL DWG etc Many Thanks Peter Allen

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Gallery PDB source
by David Piper 24 Jun '05

24 Jun '05

Chimera Folks, I was looking at the gallery images and noticed that one is of the FlAsH molecule. Are the PDB coordinate available somewhere for this molecule? Or ReAsH? Thanks, David

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