Re: [PyMOL] Fit command for 24 vs 18 amino acids

2010-04-22 Thread Jason Vertrees
Renuka,

In this case the 'fit' command is detecting the residues that are common
between your two sequences and fitting those.  The operator in question here
is in.  You can select atoms from one chain that are in another.  For
example,

# load your two proteins p and q, then select the
# residues from p that are in q:

select p_pocket in q_pocket

Let's check and see if that's what fit is doing in your case:

# what you typed

fit p_pocket, q_pocket


# fitting manually against just those residues from p in q,
# and from q in p

fit p_pocket in q_pocket, q_pocket in p_pocket

You get the same answer.

Last, to get a list of the residues fit uses, just issue the first select
command above.

Cheers,

-- Jason


On Wed, Apr 21, 2010 at 11:49 AM, Renuka Robert renukarob...@ymail.comwrote:

 I have binding site of two homologous crystallographic structures.


  PDB_01 contains 24 amino acids:

 Leu44, Gly45, Phe49, Val52, Ala65, Lys67, Glu89, Ile104, Leu120, Glu121,
 Arg122, Pro123, Val126, Asp128, Asp131, Glu171, Asn172, Leu174, Ile185,
 Asp186, Tyr215, Arg274, Pro275, Ser276.


  PDB_02 contains 18 amino acids:

 Leu44, Gly145, Phe49, Val52, Ala65, Lys67, Glu89, Ile104, Leu120, Glu121,
 Arg122, Pro123, Val126, Asp128, Asp131, Leu174, Ile185, Asp186.


  I used “fit” command to calculate rms.

 fit PDB_01, PDB_02

 Executive: RMS = 0.706 (143 to 143 atoms)


  I have two questions



1.

To my knowledge “fit” command works only if there are equal number of
amino acids between the structures. If so, then how “fit” worked with 24 vs
18 amino acids?
2.

I want to calculate rms for all the atoms (i.e., including side chain
atoms) between these two structures. Among “fit” and “align” command, which
will be the best option?


  I cant understand very well from “help fit” or “help align”. Can anyone
 explain me?

 Thanks in advance!!!

 Renuka.



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[PyMOL] Load without bonding

2010-04-22 Thread David Hall
Is it possible to load a pdb file and have pymol skip making bonds?
There's a bunch of undocumented options to load, but I don't think any
of them do what I want.  I have a file where there's a bunch of
jumbled atoms and there's no relation between them, just thousands in
the same place and pymol spends a long time loading it presumably
trying to make these bonds.

-David

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Re: [PyMOL] Load without bonding

2010-04-22 Thread David Hall
actually, you can ignore this email, it seems pymol was having issues
because there were a bunch of CONECT records, if I delete those, pymol
actually loads it really fast.  Kind of odd behavior, but interesting.

-David

On Thu, Apr 22, 2010 at 2:14 PM, David Hall li...@cowsandmilk.net wrote:
 Is it possible to load a pdb file and have pymol skip making bonds?
 There's a bunch of undocumented options to load, but I don't think any
 of them do what I want.  I have a file where there's a bunch of
 jumbled atoms and there's no relation between them, just thousands in
 the same place and pymol spends a long time loading it presumably
 trying to make these bonds.

 -David


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Re: [PyMOL] Load without bonding

2010-04-22 Thread Jason Vertrees
Hi David,

Check out the connect_mode setting:

set connect_mode, 1

# no bonds

fetch 1cll

Cheers,

-- Jason

On Thu, Apr 22, 2010 at 2:14 PM, David Hall li...@cowsandmilk.net wrote:
 Is it possible to load a pdb file and have pymol skip making bonds?
 There's a bunch of undocumented options to load, but I don't think any
 of them do what I want.  I have a file where there's a bunch of
 jumbled atoms and there's no relation between them, just thousands in
 the same place and pymol spends a long time loading it presumably
 trying to make these bonds.

 -David

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Jason Vertrees, PhD
PyMOL Product Manager
Schrodinger, LLC

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

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Re: [PyMOL] Load without bonding

2010-04-22 Thread David Hall
I started a pymolwiki page for this at
http://www.pymolwiki.org/index.php/Connect_mode so I had something to
benchmark.  If someone knows what connect_mode=3 does, please fill it
in.  The code in layer2/ObjectMolecule2.c is probably where to start
if you want to take a stab at figuring it out.

-David

On Thu, Apr 22, 2010 at 2:43 PM, Jason Vertrees
jason.vertr...@schrodinger.com wrote:
 Hi David,

 Check out the connect_mode setting:

 set connect_mode, 1

 # no bonds

 fetch 1cll

 Cheers,

 -- Jason

 On Thu, Apr 22, 2010 at 2:14 PM, David Hall li...@cowsandmilk.net wrote:
 Is it possible to load a pdb file and have pymol skip making bonds?
 There's a bunch of undocumented options to load, but I don't think any
 of them do what I want.  I have a file where there's a bunch of
 jumbled atoms and there's no relation between them, just thousands in
 the same place and pymol spends a long time loading it presumably
 trying to make these bonds.

 -David

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 Jason Vertrees, PhD
 PyMOL Product Manager
 Schrodinger, LLC

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


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Re: [PyMOL] PyMOL Plugin Architecture

2010-04-22 Thread Robert Campbell
Hi Maia,

Just to add to what Jason said:

On Thu, 22 Apr 2010 17:16:41 -0400, Jason Vertrees
jason.vertr...@schrodinger.com wrote:

  2. Which plugin allows me to move one structure relative to another. (I
  want to do manual docking of one structure into another).
 
 You don't need a plugin to move objects.  Just use SHIFT-middle-mouse
 button drag, while in editing mode.  If you're starting from one
 object (eg. protein and ligand come from one file) then split them up:

In case it isn't obvious to you, you can switch between viewing mode and
editing mode simply by left clicking in the bottom-right region of the main
PyMOL window where the mouse button functions are described.

Cheers,
Rob

-- 
Robert L. Campbell, Ph.D.
Senior Research Associate/Adjunct Assistant Professor 
Botterell Hall Rm 644
Department of Biochemistry, Queen's University, 
Kingston, ON K7L 3N6  Canada
Tel: 613-533-6821Fax: 613-533-2497
robert.campb...@queensu.cahttp://pldserver1.biochem.queensu.ca/~rlc

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Re: [PyMOL] PyMOL Plugin Architecture

2010-04-22 Thread Maia Cherney
Thank, Robert, Jason.
Finally I figured this out with your help.

Maia

Robert Campbell wrote:
 Hi Maia,

 Just to add to what Jason said:

 On Thu, 22 Apr 2010 17:16:41 -0400, Jason Vertrees
 jason.vertr...@schrodinger.com wrote:

   
 2. Which plugin allows me to move one structure relative to another. (I
 want to do manual docking of one structure into another).
   
 You don't need a plugin to move objects.  Just use SHIFT-middle-mouse
 button drag, while in editing mode.  If you're starting from one
 object (eg. protein and ligand come from one file) then split them up:
 

 In case it isn't obvious to you, you can switch between viewing mode and
 editing mode simply by left clicking in the bottom-right region of the main
 PyMOL window where the mouse button functions are described.

 Cheers,
 Rob

   

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[PyMOL] Please remove my emal address from your bulletin board

2010-04-22 Thread Charles David Stout
Dear PyMol developers,

PyMol is an awesome program, but I'm a casual user.  Please remove my 
email address from your bulletin board.
Thanks
Dave Stout
4-22-10

d...@scripps.edu

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