Re: [PyMOL] Visualizing sp3-hybridized electron orbital

2013-06-14 Thread Thomas Holder
Hi Yury,

if you have the electron cloud as map data, you can load it into PyMOL
and use any map visualization (volume, isosurface, isomesh). Once the
map is loaded into PyMOL, use the A (Action) button next to the object
name in the object menu panel on the right.

Supported map formats include: xplor, ccp4, phi, dx.

Cheers,
  Thomas

Yury Polikanov wrote, On 06/13/13 20:50:
 Dear PyMOL users,
 
 I need to visualize sp3-hybridized electron cloud with lone pair of electrons 
 to
 make figure explaining the chemical mechanism of the reaction. Does anyone 
 know
 if it is possible to accomplish with PyMOL???
 Any comments or suggestions would be valuable!
 Thanks a lot in advance!
 
 Best regards,
 Yury

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Thomas Holder
PyMOL Developer
Schrödinger Contractor

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Re: [PyMOL] Isomesh plot in Pymol vs Coot

2013-06-14 Thread Thomas Holder
Hi Partha,

load your structure and map into PyMOL like this:

PyMOL load your.pdb
PyMOL load your_2fofc.map, format=ccp4

or:
PyMOL load your_2fofc.ccp4

Hope that helps.

Cheers,
  Thomas

Munshi, Parthapratim wrote, On 06/13/13 21:20:
 Hi
 
 I am having some issues with the isomesh plot in PyMol. The map at same
 sigma level in Coot and PyMol varies by a certain factor. From google
 search, I notice that I am not the only one had such problem and
 following was the relevant post some years ago. Now, how do I mimic coot
 in case I want to load my own pdb and maps but not fetch? I did try the
 following  steps with my pdb and maps but while loading it doesn't like
 type=2fofc and async keywords. 
 
 Any help on this would be highly appreciating.
 
 Thanks
 Partha
 
 In PyMOL:
 
 # mimic Coot
 set orthoscopic
 set line_width, 5
 # get the data
 fetch 1cll, async=0
 fetch 1cll, type=2fofc, async=0
 # create the map; carve 2.5 Ang from the polymer
 isomesh 1cll_map,1cll_2fofc, 1.06, poly, carve=2.5
 # find example residue
 orient i. 78
 # color
 color magenta, e. N
 color tv_yellow, e. C
 
 In Coot:
   * Fetch 1CLL and its map from EDS
   * zoom to residue 78
   * scroll to 1.06 sigma

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Re: [PyMOL] Distorted secondary structure using 'alter' command

2013-06-14 Thread Thomas Holder
Hi Ritu,

do I understand correctly that resi 3-9 are *not* in helix conformation,
and you want to perform a modelling task? Altering the ss property is
not sufficient, that's just an annotation and not a modelling
constraint. PyMOL is primarily a visualization tool and less a modelling
tool, although you have some options here. Have a look at this PyMOLWiki
script:

http://pymolwiki.org/index.php/Set_phipsi

And this page:
http://pymolwiki.org/index.php/Modeling_and_Editing_Structures

Hope that helps.

Cheers,
  Thomas

Rituparna Sengupta wrote, On 06/13/13 19:30:
 Hi All,
 
 I'm trying to change a stretch of a polypeptide chain (residues 3-9) into a 
 helix. I use the alter command:
 
 alter 3-9/, ss='H'
 
 But when I try to see the updated structure in cartoon, the structure doesn't 
 appear like a helix. It looks like a distorted helix. How do I correct it?
 
 Thanks,
 Ritu

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Re: [PyMOL] PyMOL 1.6 pre-release announcement

2013-06-14 Thread Robert Campbell
Hello Thomas and David,

Was there any resolution of this?  I've just compiled the latest version
from SVN and I have the same problem opening files created under version
1.5.0.  This is on Debian testing (32-bit).

Cheers,
Rob

 On Fri, 2013-04-26 19:15  EDT,  David Hall li...@cowsandmilk.net
wrote:

 Hi Thomas,
 
 I'm running into issues with color compatibility between 1.6 and
 earlier versions when opening pses
 (a) when I open any 1.5 pse in 1.6, I see a bunch of errors like:
 Setting-Error: type read mismatch (color) 6
 Setting-Error: type read mismatch (color) 663
 Setting-Error: type read mismatch (color) 664
 (b) background color disparity:
 saved in 1.5 with black background; opens in 1.6 with a white background
 saved in 1.6 with a blackground; opens in 1.5 (and earlier) with a red
 background
 
 These are run on openSUSE 12.3 with SVN rev 4028 . On a side note,
 others who would like to beta test can use devel:languages:python repo
 in openSUSE:
 https://build.opensuse.org/package/show?package=pymolproject=devel%3Alanguages%3Apython
 
 -David
 

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Kingston, ON K7L 3N6  Canada
Tel: 613-533-6821
robert.campb...@queensu.cahttp://pldserver1.biochem.queensu.ca/~rlc

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