From chemistry-request@server.ccl.net Mon Nov 26 04:36:02 2001
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Message-ID: <000b01c1765e$114ac240$3b8506c1@chem.klte.hu>
From: "Tamas Gunda" <tamasgunda@tigris.klte.hu>
To: <chemistry@ccl.net>
Subject: Mol2Mol 4.0 announcement
Date: Mon, 26 Nov 2001 10:38:12 +0100
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Dear CCL Members,

    The new 4.0 version of the molecule file conversion,
manipulation and utility program Mol2Mol is now available
> from CompuChem Ltd.
    The current version of Mol2Mol recognizes, and interconverts
about 40 different file formats (including subtypes).
Contrary to the previous versions, there is no limit in
the number of inputted atoms (apart from memory limitations).
    It can slice multiple structural files to single ones (such 
as PDB models or MDL SD files to single ones) and vice versa
in several variations. Support for PDB Chime subformat
(with 1-2-3 bonds).
     It contains a simple graphical display module to inspect the
currently loaded molecule. It possesses chemical intelligence
for recognizing detailed atom types, hybridization and chemical
environments, which is necessary for converting simpler formats
(like X-ray crystallographic files) to more advanced ones,
or when hydrogen atoms are automatically to be added. Calculation
of pyramidalities, ring puckerings, checking for failors in
protein backbones.
   Mol2Mol is a very handy tool for everybody dealing with
molecular modelling.
   It is impossible to write here all of the features of Mol2Mol,
but have a look to the following links:

A very brief summary for those who don't like reading too much:
http://dragon.klte.hu/~gundat/m2m/mol2mol-sum.htm

For more info see: http://www.compuchem.com/mol2mol.htm
and/or http://dragon.klte.hu/~gundat/mol2mola.htm 

POV-Ray users may also have a look at:
http://dragon.klte.hu/~gundat/povraya.htm 

Demo and normal versions are available from CompuChem.
http://www.compuchem.com



From chemistry-request@server.ccl.net Mon Nov 26 05:59:47 2001
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Date: Mon, 26 Nov 2001 12:59:26 +0200
From: Hanoch Senderowitz <hanoch@peptor.co.il>
Reply-To: hanoch@peptor.co.il
Organization: Peptor
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Dear members of the Computational Chemistry List

I was recently asked to give an introductory workshop 
on molecular modeling with a particular emphasis on small 
molecules QSAR. The workshop is intended to combine theory 
with hands-on tutorials, using primarily Accelrys software 
(i.e., Cerius2). I would be grateful for any help in building 
this workshop in the form of course outlines, lecture notes, 
slides etc. Once completed, I'll be happy to send to this list
the workshop outline and slides. 

Regards,

Hanoch
-- 
========================================================
Hanoch Senderowitz 
Peptor Ltd., Kiriyat Weizmann, Rehovot 76326, Israel
e-mail: hanoch@peptor.co.il
phone : 972-8-938-7764
fax   : 972-8-940-7737
========================================================


From chemistry-request@server.ccl.net Mon Nov 26 05:59:36 2001
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Organization:  
Message-ID: <001c01c17669$d75107a0$a340cf9b@chem.auth.gr>
From: "Aleka L." <alithoxo@chem.auth.gr>
To: <chemistry@ccl.net>
Subject: SCIPCM/PCM questions
Date: Mon, 26 Nov 2001 13:02:28 +0200
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Dear CCL'ers,=20

I'm runing solvent effect calculations on a series of molecules =
containing 20-28 atoms (C, H, O) using the SCIPCM model; the dielectric =
constant values I use range from 1.92 to 80. My questions are as =
follows:                                                                 =
                                                                         =
   1) what is the appropriate number of integration points I should use? =
                                                     I've already read =
the answer cited on                                                      =
             =
<http://server.ccl.net/cgi-bin/ccl/message.cgi?1996+07+18+001+raw>       =
                                   recommending a) the non-default =
single-center integration procedure and b) for molecules possessing more =
than 20 atoms the use of at least NAtoms*100 total points. However, I've =
run the SCIPCM example of Gaussian 98W, which used 734 points for =
formaldehyde (4 atoms) and not the suggested value of 434 points.        =
                                                                         =
                                                               2) Is =
there any way to compute the second derivatives of the energy =
analytically and not numerically with the SCIPCM model or other =
continuum models (PCM, CPCM, IEFPCM) with the new Gaussian 98W =
RevisionA.11version?                                                     =
                                                                         =
       3) I often get one negative frequency value. Does anyone know of =
any method to determine that in advance, in order to interrupt my =
running, since each one of my runs lasts for a rather long time?

Thanking you in advance.  =20

Alexandra Lithoxoidou                                             =20

PhD candidate                                                            =
                                                               Aristotle =
University of Thessaloniki                                               =
                                                 School of Chemistry     =
                                                                         =
                                          Lab of Applied Quantum =
Chemistry                                                                =
                                 P.O. Box 135                            =
                                                                         =
                             54-006 Thessaloniki, Greece =20

e-mail: alithoxo@chem.auth.gr                                            =
                                                 =20


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<META content=3D"text/html; charset=3Diso-8859-7" =
http-equiv=3DContent-Type>
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<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>
<P>Dear CCL&#8217;ers, </P>
<P>I&#8217;m runing solvent effect calculations on a series of molecules =
containing=20
20-28 atoms (C, H, O) using the SCIPCM model; the dielectric constant =
values I=20
use range from 1.92 to 80. My questions are as=20
follows:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
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bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
1) what is the appropriate number of integration points I should=20
use?&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
I&#8217;ve already read the answer cited=20
on&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;=20
&nbsp;&nbsp;<U><FONT color=3D#0000ff face=3DHelvetica>=20
&lt;http://server.ccl.net/cgi-bin/ccl/message.cgi?1996+07+18+001+raw&gt;<=
/FONT></U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
recommending a) the non-default single-center integration procedure and =
b) for=20
molecules possessing more than 20 atoms the use of at least NAtoms*100 =
total=20
points. However, I&#8217;ve run the SCIPCM example of Gaussian 98W, =
which used 734=20
points for formaldehyde (4 atoms) and not the suggested value of 434=20
points.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
2) Is there any way to compute the second derivatives of the energy =
analytically=20
and not numerically with the SCIPCM model or other continuum models =
(PCM, CPCM,=20
IEFPCM) with the new Gaussian 98W=20
RevisionA.11version?&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;=20
 3) I often get one negative frequency value. Does anyone know of any =
method to=20
determine that in advance, in order to interrupt my running, since each =
one of=20
my runs lasts for a rather long time?</P>
<P>Thanking you in advance.&nbsp;&nbsp;&nbsp;</P>
<P>Alexandra=20
Lithoxoidou&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P>
<P>PhD=20
candidate&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;=20
Aristotle University of=20
Thessaloniki&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
School of=20
Chemistry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
Lab of Applied Quantum=20
Chemistry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;=20
P.O. Box=20
135&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
54-006&nbsp;Thessaloniki, Greece&nbsp;&nbsp;</P>
<P>e-mail: <A=20
href=3D"mailto:alithoxo@chem.auth.gr">alithoxo@chem.auth.gr</A>&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P></FONT></DIV></BODY></HTML=
>

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From chemistry-request@server.ccl.net Mon Nov 26 06:39:14 2001
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	 Mon, 26 Nov 2001 03:39:05 -0800
X-Originating-IP: [212.244.147.4]
From: "Victor Anisimov" <Victor_Anisimov@hotmail.com>
To: <chemistry@ccl.net>
Subject: Large biomolecules
Date: Mon, 26 Nov 2001 12:40:48 +0100
MIME-Version: 1.0
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	charset="windows-1251"
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X-OriginalArrivalTime: 26 Nov 2001 11:39:05.0133 (UTC) FILETIME=[F3C4DDD0:01C1766E]

Dear CCLers:

I'm looking for biggest available bio-molecule, preferably protein, for running
NDDO type quantum-chemical calculation on it on my Windows PC. 
Could someone please share with me Cartesian coordinates of such 
sample.

Before asking your help I investigated PDB database and could find only 
Chaperonin with PDB id 1AON containing about 120 000 atoms after 
adding hydrogen atoms. This molecule is not that big as I need. 

It may happen that there is no bigger experimentally available protein structure 
than the mentioned above. In this case I would be quite happy to get 
Cartesian coordinates of 3D structure of a really large protein created by 
some modeling program.

I also wonder is there any application that could read sequence of
DNA base letters and construct corresponding 3D model of the DNA? 
May I ask users of such program to generate a realistic 3D model of a Human
DNA fragment for me corresponding to single Gene (your favorite, for
example), that should produce several million atoms' structure, I believe.

Thank you for your time.

With kind regards,
Victor.

Victor Anisimov, PhD.
E-Mail: Victor_Anisimov@hotmail.com
Mobile: +48 606 945 326



From chemistry-request@server.ccl.net Mon Nov 26 05:41:55 2001
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From: "Magnus" <sungam@club-internet.fr>
To: <chemistry@CCL.net>
Subject: Heat of Formation in AM1
Date: Mon, 26 Nov 2001 11:45:32 +0100
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    Hello there,

    I am wondering how do AM1 calculate the  heat of formation of the =
chemical compouds you provide as input. I would like to compare these =
figures with the result you can obtain using methods such as Benson or =
Pedley.=20
    Do you know if we can find on the Internet databases holding =
thermodynamical properties of compounds ? It would be quite useful to me =
if i could compare the calculated heat of formations to those who were =
observed.

    Michel Julien


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content=3Dtext/html;charset=3Diso-8859-1>
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<BODY bgColor=3D#ffffff>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>&nbsp;&nbsp;&nbsp; Hello there,</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>&nbsp;&nbsp;&nbsp; I am wondering how do AM1 =
calculate the=20
&nbsp;heat of formation of the chemical compouds you provide as input. I =
would=20
like to compare these figures with the result you can obtain using =
methods such=20
as Benson or Pedley. </FONT></DIV>
<DIV><FONT size=3D2>&nbsp;&nbsp;&nbsp; Do you know if we can find on the =
Internet=20
databases holding thermodynamical properties of compounds ? It would be =
quite=20
useful to me if i could compare the calculated heat of formations to =
those who=20
were observed.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>&nbsp;&nbsp;&nbsp; Michel Julien</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV></BODY></HTML>

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From chemistry-request@server.ccl.net Mon Nov 26 11:45:14 2001
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Date: Mon, 26 Nov 2001 08:44:57 -0800
From: David Case <case@scripps.edu>
To: temper <temper@chem.auth.gr>
Cc: chemistry@server.ccl.net
Subject: Re: CCL:Broken symmetry calculations
Message-ID: <20011126084457.A85054@gamow.scripps.edu>
References: <004001c13f5b$78ec2400$5e40cf9b@chem.auth.gr>
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In-Reply-To: <004001c13f5b$78ec2400$5e40cf9b@chem.auth.gr>; from temper@chem.auth.gr on Mon, Sep 17, 2001 at 12:30:58PM +0300

On Mon, Sep 17, 2001, temper wrote:
> 
> In the course of the theoretical ab initio treatment of magnetic exchange
> in dinuclear transition metal systems some authors use the method of broken 
> symmetry. Is there anybody to help me in how to do broken symmetry calculations?
> Is there any recipe for it?

On of the more detailed early discussions of this is in the following
review:

%A L. Noodleman
%A D.A. Case
%T Density-functional theory of spin polarization and spin coupling in
iron-sulfur clusters
%J Adv. Inorg. Chem.
%V 38
%P 423-470

As for "how-to": this is discussed in many papers.  Generally, we recommend
converging first a high-spin (fully symmetric) SCF calculation, then
exchanging the alpha and beta spins on one side of the molecule to create
a starting configuration for the broken symmetry calculation.  Exactly
how to "flip spins" depends on the program you are using.  ADF and Jaguar
(maybe others) offer built-in support for this; with other programs one
generally has to manually edit a molecular orbital coefficient file or
something similar to that.  Be prepared for convergence difficulties (that
is, be prepared to be patient).

...hope this helps...dac

-- 

==================================================================
David A. Case                     |  e-mail:      case@scripps.edu
Dept. of Molecular Biology, TPC15 |  fax:          +1-858-784-8896
The Scripps Research Institute    |  phone:        +1-858-784-9768
10550 N. Torrey Pines Rd.         |  home page:                   
La Jolla CA 92037  USA            |    http://www.scripps.edu/case
==================================================================

From chemistry-request@server.ccl.net Mon Nov 26 13:42:07 2001
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Subject: Biopolymer modeling and Docking on windows NT
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Hi All!

I am looking for some information on available molecular modeling software
for modeling of biopolymers
(proteins and nucleic acids) on the windows NT platform. I need something
that is capable of performing basic
calculations on proteins and nucleic acids, including protein-nucleic acid
docking operations.

Thanks,

Prasad


**************************************************************************************************************************************************************


Prasad Dande, Ph. D.
Senior Scientist
Research Chemistry
ISIS Pharmaceuticals
2292 Faraday Avenue
Carlsbad, CA 92008
Tel: 760 603 4671
Fax: 760 603 4654
Prasad_Dande@isisph.com



From chemistry-request@server.ccl.net Mon Nov 26 13:37:41 2001
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Date: Fri, 16 Nov 2001 15:48:24 -0500
To: CHEMISTRY@ccl.net
From: Russ Johnson <russell.johnson@nist.gov>
Subject: Fluid Simulation Challenge
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ANNOUNCEMENT

FIRST INDUSTRIAL FLUID PROPERTIES SIMULATION CHALLENGE

The Computational Molecular Science and Engineering Forum 
http://www.comsef.aiche.org/ of the American Institute of Chemical 
Engineers (AIChE) has established an open competition for scientists and 
engineers to use molecular simulation methods to calculate results for 
specific sets of posed problems.
The primary goal of the Industrial Fluid Properties Simulation Challenge is 
to obtain an in-depth and objective assessment of our current abilities and 
inabilities to predict thermophysical properties of industrially 
challenging fluids using computer simulation.  Another goal of this 
competition is to help drive development of molecular simulation 
methodology toward a closer alignment with the needs of the chemical 
industry.  We anticipate that this challenge will be an annual event.
The competition begins in November 2001 when the problems are announced.
Entries are due no later than September 3, 2002.
Full details are available at

http://www.cstl.nist.gov/FluidSimulationChallenge

Participants must register at this web site to ensure that their proposed 
methodology is eligible.  Two half-day sessions at the 2002 Annual Meeting 
of the AIChE in Indianapolis (Nov.3-8, 2002) will be held to discuss the 
results and announce the winners.  The winners will be presented with an 
award and prize at the AIChE meeting.  It is anticipated that significant 
monetary prizes will be provided by industrial donors.
Industry is seeking successful methods, based on molecular simulation 
techniques, for prediction of properties of fluids and mixtures.  This 
challenge is in part geared towards ensuring the relevance of academic 
simulation activities to industrial requirements. Successful participants 
will have the opportunity to transfer their methods to industry.
This competition is a result of The Workshop on Simulation Methods to 
Predict the Thermophysical Properties of Fluids 
http://www.ctcms.nist.gov/~fstarr/ptpfms/home.html.

All inquiries should be directed to
Raymond Mountain
Competition Committee Chair
National Institute of Standards and Technology
raymond.mountain@nist.gov
301-975-2484.






From chemistry-request@server.ccl.net Mon Nov 26 10:10:43 2001
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To: "Victor Anisimov" <Victor_Anisimov@hotmail.com>
Cc: <chemistry@ccl.net>
Subject: Re: Large biomolecules
References: <DAV70kVZoii7mKSS4SK00008898@hotmail.com>
From: Andrey Khavryuchenko <akhavr@kds.com.ua>
Organization: KDS Software Group
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Victor,

"VA" == Victor Anisimov wrote:

 VA> I'm looking for biggest available bio-molecule, preferably protein,
 VA> for running NDDO type quantum-chemical calculation on it on my Windows
 VA> PC.  Could someone please share with me Cartesian coordinates of such
 VA> sample.

 VA> Before asking your help I investigated PDB database and could find
 VA> only Chaperonin with PDB id 1AON containing about 120 000 atoms after
 VA> adding hydrogen atoms. This molecule is not that big as I need.

I am curious why you would want such large protein to be calculated using
NDDO?

And, of course, what hardware and software you're going to utilize?


-- 
Andrey V Khavryuchenko          http://www.kds.com.ua/
Offshore Software Development


From chemistry-request@server.ccl.net Mon Nov 26 14:12:15 2001
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Date: Mon, 26 Nov 2001 20:12:10 +0100 (MET)
From: Thomas Huber <Thomas_Huber@Physik.TU-Muenchen.DE>
To: a3arzi <Arturas.Ziemys@vaidila.vdu.lt>
cc: CCL <chemistry@ccl.net>
Subject: Re: CCL:BSA 3D structure - does anybody knows aby hook ?
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Arturas,
if you search the PDB for albumin (www.rcsb.org), you'll find many
structures, even of complexes with hydrophobic substances, but for human
serum albumin.  If there is a specific reason for you to look for the
bovine/cow form, then I would probably try a homology modeling server
(www.expasy.ch) Swiss-Prot/Model.  
Hope this helps!
Thomas

-----------------------------------------------------------------------------
Dr.Thomas Huber                        University of Arizona
Tel.: (520) 621-2537                   Department of Chemistry 
FAX:  (520) 621-8407                   1306 E. University Blvd.
email thuber@physik.tu-muenchen.de     Tucson, Arizona 85721-0041

On Fri, 26 Oct 2001, a3arzi wrote:

> Hi,
> 
> I am searching for BSA - Bovine Serum Albumin - tertiary structure.
> I surfed www, icuding PDB www database, and it was without any results.
> ( Here is the last tray .... )
>  
> Coul anybody point to any reference about the experimental tertiary
> structure of BSA ?
> 
> Bets regards to all
> Arturas Z.
> 
> 
> 
> -= This is automatically added to each message by mailing script =-
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> 
> 
> 
> 



From chemistry-request@server.ccl.net Mon Nov 26 11:23:25 2001
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Date: Mon, 26 Nov 2001 11:23:01 -0500
From: "Shobe, Dave" <dshobe@sud-chemieinc.com>
Subject: Gamess non-analytic frequencies
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The following is about Gamess US (Windows version):

When analytical gradients are not available for a given method, in Gamess
one uses Trudge for geometry optimization.  (It's not too too bad with only
one geometric parameter).  But once the minimum is found, how does one
calculate the frequency and zero-point energy?  In other words, what is the
Gamess equivalent of (Gaussian's) freq=numer?

--David Shobe
Süd-Chemie Inc.
phone (502) 634-7409
fax     (502) 634-7724
email  dshobe@sud-chemieinc.com

Don't bother flaming me: I'm behind a firewall.



