Dyda,

By default, PyMOL uses charges and radii from the Amber99 forcefield, as per
APBS.  The PDB2PQR tool included with APBS enables you to use other
charge/radius sets, such as CHARMM.

Chain IDs need to be removed for PQR...though future versions of PyMOL do
this automatically.

Cheers,
Warren\

--
Warren L. DeLano, Ph.D.                     
Principal Scientist

. DeLano Scientific LLC  
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> -----Original Message-----
> From: pymol-users-ad...@lists.sourceforge.net 
> [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of Dyda
> Sent: Sunday, June 12, 2005 5:38 PM
> To: pymol-users@lists.sourceforge.net
> Subject: [PyMOL] Pymol/ABPS
> 
> 
> Hi,
> 
> I'd like to know what charges Pymol uses when generates a pqr 
> file from a pdb.
> 
> The follow-up would be is whether there was a way to change 
> this, say if one wanted to use charmm charges rather than amber.
> 
> It seems that APBS hates chain IDs. Is that really so, or 
> just my imagination?
> 
> Thanks for your help.
> 
>                               Fred
> *********************************************************
> **********************
> Fred Dyda, Ph.D.                       Phone:301-402-4496
> Laboratory of Molecular Biology        Fax: 301-496-0201
> HHS/NIH/NIDDK                          numerical page: 1-888-513-5421
> Bldg. 5. Room 303                      e-mail: d...@helix.nih.gov
> Bethesda, MD 20892-0560 URGENT message: 
> 8885135...@archwireless.net 
> **************************************************************
> *****************
> 
> 
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