Re: [PyMOL] about Display CCP4 Maps

2011-10-26 Thread Joel Tyndall
Hi Lina,

Could you be more specific about what you are trying to do. E.g. I have a 
structure from the pdb and I would like to display the density.

If it is this option then you can automatically generate ccp4 type maps from 
http://eds.bmc.uu.se/eds/ assuming the structure factors have been deposited. 
You can them load these into pymol (file.ccp4)

Or I am determining the structure of a protein ligand complex and I wish to 
calculate the electron density map .

If this is the case I would suggest some further reading of the ccp4 tutorials. 
These come with ccp4i

Hope this helps

Joel

_
Joel Tyndall, PhD

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National School of Pharmacy
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-Original Message-
From: lina [mailto:lina.lastn...@gmail.com] 
Sent: Wednesday, 26 October 2011 1:27 a.m.
To: Thomas Holder
Cc: pymol-users@lists.sourceforge.net
Subject: Re: [PyMOL] about Display CCP4 Maps

On Tue, Oct 25, 2011 at 7:56 PM, Thomas Holder spel...@users.sourceforge.net 
wrote:
 Hi Lina,

 do you already have any electron density or reflection file (*.map, 
 *.mtz,
 ...) or do you want to create a fake density from your structure? 
 It's not


I don't have the reference electron density file.

mainly wish to calculate a density map based on the structure?

 clear from your question.

 Cheers,
Thanks for asking.

  Thomas

 On 10/25/2011 10:28 AM, lina wrote:

 Hi,

 I went through the pymolwiki and cross this page:

 http://www.pymolwiki.org/index.php/Display_CCP4_Maps

 I have some questions:

 1] do I need generate the map from ccp4

  (I have already installed the ccp4i, but seems not easy to know how 
 to get the map)

 2] For small molecular (ligand), the ccp4 is the best way to obtain 
 its  electron density map?

 Seems those questions are not so-pymol-related, but I wish if someone 
 are familiar with this, can give me some advice??

 Those questions might be easy, but to me at present it seems very 
 confusing.

 Thanks with best regards,

 --
 Thomas Holder
 MPI for Developmental Biology


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Re: [PyMOL] about Display CCP4 Maps

2011-10-25 Thread Thomas Holder
Hi Lina,

do you already have any electron density or reflection file (*.map, 
*.mtz, ...) or do you want to create a fake density from your 
structure? It's not clear from your question.

Cheers,
   Thomas

On 10/25/2011 10:28 AM, lina wrote:
 Hi,

 I went through the pymolwiki and cross this page:

 http://www.pymolwiki.org/index.php/Display_CCP4_Maps

 I have some questions:

 1] do I need generate the map from ccp4

   (I have already installed the ccp4i, but seems not easy to know how
 to get the map)

 2] For small molecular (ligand), the ccp4 is the best way to obtain
 its  electron density map?

 Seems those questions are not so-pymol-related, but I wish if someone
 are familiar with this, can give me some advice??

 Those questions might be easy, but to me at present it seems very confusing.

 Thanks with best regards,

-- 
Thomas Holder
MPI for Developmental Biology

--
The demand for IT networking professionals continues to grow, and the
demand for specialized networking skills is growing even more rapidly.
Take a complimentary Learning@Cisco Self-Assessment and learn 
about Cisco certifications, training, and career opportunities. 
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Re: [PyMOL] about Display CCP4 Maps

2011-10-25 Thread lina
On Tue, Oct 25, 2011 at 7:56 PM, Thomas Holder
spel...@users.sourceforge.net wrote:
 Hi Lina,

 do you already have any electron density or reflection file (*.map, *.mtz,
 ...) or do you want to create a fake density from your structure? It's not


I don't have the reference electron density file.

mainly wish to calculate a density map based on the structure?

 clear from your question.

 Cheers,
Thanks for asking.

  Thomas

 On 10/25/2011 10:28 AM, lina wrote:

 Hi,

 I went through the pymolwiki and cross this page:

 http://www.pymolwiki.org/index.php/Display_CCP4_Maps

 I have some questions:

 1] do I need generate the map from ccp4

  (I have already installed the ccp4i, but seems not easy to know how
 to get the map)

 2] For small molecular (ligand), the ccp4 is the best way to obtain
 its  electron density map?

 Seems those questions are not so-pymol-related, but I wish if someone
 are familiar with this, can give me some advice??

 Those questions might be easy, but to me at present it seems very
 confusing.

 Thanks with best regards,

 --
 Thomas Holder
 MPI for Developmental Biology


--
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demand for specialized networking skills is growing even more rapidly.
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Re: [PyMOL] about Display CCP4 Maps

2011-10-25 Thread Roger Rowlett




Lina,

If you want to create an "omit" map for your ligand using CCP4i, you
can find instructions here for both Fo-Fc and 2Fo-Fc maps:

http://capsicum.colgate.edu/chwiki/tiki-index.php?page=Model+Building+and+Validation#Creating_Omit_Maps_for_Ligands_using_Refmac

To display an omit map in Pymol around your ligand, you can find
instructions here:

http://capsicum.colgate.edu/chwiki/tiki-index.php?page=Visualization+of+PDB+files#Visualizing_Electron_Density_Maps

These last instructions are the same as those I posted on the CCP4 wiki.

http://capsicum.colgate.edu/chwiki/tiki-index.php?page=Visualization+of+PDB+files#Visualizing_Electron_Density_Maps

__
Roger S. Rowlett
Gordon  Dorothy Kline Professor
Department of Chemistry
Colgate University
13 Oak Drive
Hamilton, NY 13346

tel: (315)-228-7245
ofc: (315)-228-7395
fax: (315)-228-7935
email: rrowl...@colgate.edu

Thomas Holder wrote:

  Hi Lina,

do you already have any electron density or reflection file (*.map, 
*.mtz, ...) or do you want to create a "fake" density from your 
structure? It's not clear from your question.

Cheers,
   Thomas

On 10/25/2011 10:28 AM, lina wrote:
  
  
Hi,

I went through the pymolwiki and cross this page:

http://www.pymolwiki.org/index.php/Display_CCP4_Maps

I have some questions:

1] do I need generate the map from ccp4

  (I have already installed the ccp4i, but seems not easy to know how
to get the map)

2] For small molecular (ligand), the ccp4 is the best way to obtain
its  electron density map?

Seems those questions are not so-pymol-related, but I wish if someone
are familiar with this, can give me some advice??

Those questions might be easy, but to me at present it seems very confusing.

Thanks with best regards,

  
  
  




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demand for specialized networking skills is growing even more rapidly.
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Re: [PyMOL] about Display CCP4 Maps

2011-10-25 Thread Thomas Holder
On 10/25/2011 02:27 PM, lina wrote:
 On Tue, Oct 25, 2011 at 7:56 PM, Thomas Holder
 spel...@users.sourceforge.net  wrote:
 Hi Lina,

 do you already have any electron density or reflection file (*.map, *.mtz,
 ...) or do you want to create a fake density from your structure? It's not

 I don't have the reference electron density file.

 mainly wish to calculate a density map based on the structure?

what you want is the map_new command in PyMOL.

Have a look at this example:
http://pymolwiki.org/index.php/Map_set#Detailed_Example

And read the help for the map_new command (there is no wiki page yet):
PyMOLhelp map_new

Cheers,
   Thomas

-- 
Thomas Holder
MPI for Developmental Biology

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Re: [PyMOL] about Display CCP4 Maps

2011-10-25 Thread Thomas Holder
 And read the help for the map_new command (there is no wiki page yet):
 PyMOLhelp map_new

now the wiki page is there:
http://pymolwiki.org/index.php/Map_new

Cheers,
   Thomas

-- 
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MPI for Developmental Biology

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Re: [PyMOL] about Display CCP4 Maps

2011-10-25 Thread lina

On Wednesday 26,October,2011 12:55 AM, Jason Vertrees wrote:

Hi Lina,

1] do I need generate the map from ccp4

 (I have already installed the ccp4i, but seems not easy to know how
to get the map)


The CCP4 file is a map. Once the map is loaded into PyMOL you can 
choose how you want to represent the data: isomesh, isosurface, slice, 
gradient, or the new volumes. To make a new representation for the map 
choose one of those from the A (Action) button.


2] For small molecular (ligand), the ccp4 is the best way to obtain
its  electron density map?


PyMOL natively reads these maps, so you don't need ccp4i or any 
special plugins.

At present I have problem created the map.

Thanks,



Cheers,

-- Jason


--
Jason Vertrees, PhD
PyMOL Product Manager
Schrodinger, LLC

(e) jason.vertr...@schrodinger.com mailto:jason.vertr...@schrodinger.com
(o) +1 (603) 374-7120


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