From chemistry-request@server.ccl.net  Mon Jun 26 00:55:33 2000
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From: "Slawomir Z. Janicki" <slawek@alchmist.scs.uiuc.edu>
To: "GAMESS Users" <gamess-users@Glue.umd.edu>,
        "CCL" <CHEMISTRY@server.ccl.net>
Subject: NBBP and 3-center bonds
Date: Sun, 25 Jun 2000 23:52:34 -0500
Message-ID: <000401bfdf2a$57fad4e0$4a45d03f@piglet>


The Natural Bond-Bond Polarizability analysis dies when 3-center bonds are
present. Is it a problem with the NBBP definition, or am I missing something
obvious? I use PC-GAMESS v. 6.0 with NBO v. 4.M.

Also, the Steric analysis dies in every job I try to run. How can I get it
to work?

Slawomir Janicki
janicki1@earthlink.net



From chemistry-request@server.ccl.net  Mon Jun 26 08:36:12 2000
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From: uccatvm <uccatvm@UCL.ac.uk>
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Subject: Re: QM/MM codes
To: chemistry@ccl.net
Date: Mon, 26 Jun 2000 13:35:52 +0100 (BST)
In-Reply-To: <200006231512.PAA06965@pc142.iq.ufrj.br> from "Emerson Lima" at Jun 26, 2000 12:34:00 PM
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Hi Emerson,

> 	I'm searchig for molecular modeling programs that performance
> conjugate QM/MM calculations. Free softwares are specially wellcome. Could
> you suggest me some of these programs? Thank you:

A number of computational chemistry packages can do QM/MM simulations: Gaussian 
(www.gaussian.com) and NWChem (www.emsl.pnl.gov:2080/docs/nwchem/nwchem.html) 
for example.  NWChem is free, but you need to sign a user agreement form, 
check the NWChem home page. Also the latest version of GAMESS-UK 
(http://www.dl.ac.uk/CFS) has an interface to the CHARMM QM/MM code.

HTH,

Tanja
-- 
  ====================================================================
     Tanja van Mourik                                                
                                      phone                               
     University College London        work:   +44 (0)207-679-4665   
     Christopher Ingold Laboratories  home:   +44 (0)1895-259-312    
     20 Gordon Street                 e-mail                         
     London WC1H 0AJ                  work: T.vanMourik@ucl.ac.uk 
     United Kingdom                   home: tanja@netcomuk.co.uk     
  ====================================================================

From chemistry-request@server.ccl.net  Mon Jun 26 09:19:26 2000
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From: =?ISO-8859-1?Q?Tommi_Nyr=F6nen?= <nyronen@csc.fi>
To: CHEMISTRY@ccl.net
Subject: Exported PDB files 
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Dear CCLers,

Is there a program/pdb parser that can read in a set of plain xyz
coordinates of a protein in some format and then write a (pdb) file with
the secondary structure information fields (HELIX, SHEET)? 

Majority of the programs do generate the secondary structure from
the coordinates, but do not include this information in the output. We are
trying to import structural data into a "non-chemical"
visualization program, and would like to have secondary structure 
information in the input file.

All advices/comments are greatly appreciated.

Thanks in advance,

| Tommi Nyronen		CSC Scientific Computing ltd.
| Bioinformatics	Tekniikantie 15 a D
| +358-50-381 9511	P.O.BOX 405 FIN-02101 ESPOO  


