From chemistry-request@www.ccl.net  Tue Nov 17 16:49:09 1998
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From: "David E. Bernholdt" <bernhold@npac.syr.edu>


On Tue, 17 Nov 1998 15:39:50 -0500 (EST)  MARYJO@neu.edu wrote:
> 1)  Is there a listserv for CHARMm users?

The charmm-bbs list is hosted by CSIR (Chemistry Software and
Information Resources, http://www.csir.org).  To subscribe send email
to 'majordomo@csir.org' with the line:

subscribe charmm-bbs

in the body.
--
David E. Bernholdt                      | Email:  bernhold@npac.syr.edu
Northeast Parallel Architectures Center | Phone:  +1 315 443 3857
111 College Place, Syracuse University  | Fax:    +1 315 443 1973
Syracuse, NY 13244-4100                 | URL:    http://www.npac.syr.edu


From chemistry-request@www.ccl.net  Wed Nov 18 02:07:41 1998
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PhDD, Inc. ( Pharmaceutical Design & Database ) is pleased to announce
the release of
ChemDescrip & LibAnalysis

Calculation of molecular descriptors, such as number of rings and
aromatic rings, rotational bonds, molecular weight, hydrogen bond
donor,  hydrogen bond acceptor and cLogP (cLogP is not available in the
current version ) etc.. it is an extract of ChemServer functions. It is
designed to run in batch to process thousands of structures
without human intervention.

LibAnalysis is an easy to use graphical tool to display the result from
ChemDescrip.  It displays the profile
distribution of the number of rings, HBA, HBD, Rotational bonds, cLogP
and Molecular weight.

The demo version is free to download at http://www.phdd.com  by
clicking  “free download” link.

Features of  ChemDescrip:

ChemDescrip is an easy to use library design and analysis
tools.   ChemDescrip does batch calculations for the number of
rings, number of aromatic rings, number of hydrogen bond donors,
number of hydrogen bond acceptors, number of rotational bonds and
 cLogP (needs separate license ). These descriptors are the key
measurement of a library quality.
 It is compatible with MDL screen and other products.
ChemDescrip and LibAnalysis  works in Windows 95,
Windows 98 and Windows NT, Mac, Sun's Solaris, SGI's IRIX operating
 systems.

Excel interface:

The output of the descriptor  *.des file is compatible with Excel.  The
*.des files can be opened directly with Excel so users can do further
analysis or QSAR later.

Please forward all questions to sales@phdd.com.

ChemDescrip & LibAnalysis License Agreement:

This is a trial version of ChemDescrip & LibAnalysis.   It is free of
charge for all academic institutions.  For company and cooperation, this
trial version is valid for one month.  If you decided to purchase
ChemDescrip & LibAnalysis, we will send the new version to you as soon
as possible.

There is no warranty of any kind for the trial or free version.

Please check at www.phdd.com for new releases and bug fixes.




Michael Zhao
Sales
Email, sales@phdd.com
URL:  www.phdd.com



From chemistry-request@www.ccl.net  Wed Nov 18 09:04:40 1998
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> 
> Hi.
> 
> two questions concerning DFT functionals:
> 
> 1) what are the *exact* definitions of local vs. non-local?
>

This is an critical point in DFT. Nowadays, there is a great interest in
properties of the exchange and correlation functionals like homogeneity
and locality. From the DFT point of view, a functional is local when all
the terms in the functional derivative, with the exception of the first,
vanish. What does it means?. It can be presumed that we are dealing with
non-local functionals, so we can suppose several non-local dependences
(succesive derivatives of the density) in the exchange or correlation
integrand. From here, the corresponding contribution to the functional
derivative is obtained. The complete corrections to the first, local
term, would reproduce the exact potential if DFT is exact.

>
> 2) is the LYP correlation functional, which incorporates gradient
> corrections, local or non-local?
>

Following the previous discussion:non-local, since it will provide
higher order corrections to the local term in the correlation potential.

Juan Carlos

----------------------------------------------------------------------
        
        J.C. Sancho-Garcia
        Dpto. Quimica-Fisica
        Universidad de Alicante
        Apartado 99, 03080 Alicante
        SPAIN

        juancar@fisic1.ua.es

        Phone: 34-9(6)-5903536 ext. 3129
        Fax:   34-9(6)-5903537

 ----------------------------------------------------------------------


From chemistry-request@www.ccl.net  Wed Nov 18 10:54:22 1998
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At 08:09 AM 11/18/98 -0500, Michael McBrien wrote:
>I have found one CHARMm discussion group.  The address is:
>
>http://alchemy.yonsei.ac.kr/~lsk/list.c.html#CHARMM-BBS

That list is no longer active.  The one which I am aware of is at Syracuse.
 You can subscribe by sending a subscribe message to
majordomo@npac.syr.edu.  The body of the message should read:

subscribe charmm-bbs <your_address>

where <your_address> is the e-mail address where you want to receive the list.


--
Jeffrey L. Nauss, PhD		Phone: (619) 799-5555
Product Specialist, Simulations	Fax: (619) 458-0136
Molecular Simulations Inc.		E-mail: jnauss@msi.com
9685 Scranton Road
San Diego, CA 92121



From chemistry-request@www.ccl.net  Wed Nov 18 17:45:55 1998
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Date: Wed, 18 Nov 1998 16:45:58 -0600
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From: "Anthony J. Duben" <ajduben@semovm.semo.edu>
Subject: Scientific Computing Service Course(s) -- appropriate content ?
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The teaching of computing as a service course to students outside of the
computer science major is a major challenge since there are so many 
new applications and problem areas in which computers are being applied.

The teaching of nuts-and-bolts FORTRAN (or C or C++) is probably 
inappropriate for most students since they will be unlikely to end up as
programmers.  Rather, it seems to me that they will be using sophisticated
software applications to solve problems arising in their laboratories.  While
some programming experience may be necessary to solve small problems
or apply patches to programs where source code is available, this will
probably
be a small part of the tasks that they will have to do with computers. 

It would seem to me that they will spend more of their time installing,
maintaining,
and configuring operating systems and self-contained application packages.
They will be interfacing computers to experimental equipment and installing
software that will run the instrument, collect the data, and reduce it.
They will be using software tools like Excel, SPSS, SAS, Origin, etc. to
analyze
data.  Programming will probably be done using MathCAD, MATLAB or
Mathematica rather
than C or FORTRAN because of the built-in graphical interfaces for the display
of computed results.  

The problem space that those who teach service course(s) in computing will
have to be wider than the usual numerical analysis problems posed for
engineering
students, physics and chemistry majors.  There needs to be attention to
combinatorics,
probability, and statistics.   This is an important aspect in the course
offered here
since the majority of the students are from cell and molecular biology,
environmental
science, and geology.  [The chemistry and physics students here take a
pretty traditional
course in FORTRAN.  Whether this is the best choice for all, I have my
doubts.]
The course in question is a freshman level course.  Students are
concurrently struggling
with calculus at best.

I would welcome comments, critique, and suggestions on my comments from list
members.  This list has subscribers from a number of disciplines whose
insights
I would appreciate.  I will summarize for the list.

Anthony J. Duben (ajduben@semovm.semo.edu)
************************************************
Dr. Anthony J. Duben
Professor, Computer Science [MailStop 5950]
  and Associate Dean, College of Science
          and Technology [MailStop 6000]
Southeast Missouri State University
1 University Plaza
Cape Girardeau MO  63701-4799
phone: 573-651-2194 [Computer Science]
       573-986-6036 [Dean's Office]
fax:   573-651-2791 [Computer Science]
       573-651-2223 [Dean's Office]
e-mail: ajduben@semovm.semo.edu
                or
        c867buc@semovm.semo.edu

"A human being should be able to change a diaper,
plan an invasion, butcher a hog, conn a ship, design
a building, write a sonnet, balance accounts, build a 
wall, set a bone, comfort the dying, take orders, give
orders, cooperate, act alone, solve equations, analyze
a new problem, pitch manure, program a computer,
cook a tasty meal, fight efficiently, die gallantly...
Specialization is for insects."
     -- from the Notebooks of Lazarus Long by
           Robert Heinlein

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


From chemistry-request@www.ccl.net  Wed Nov 18 20:21:53 1998
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     Dear all,

    Hello, I need the information about the acid catalyzed isomerization
of -C=C- bond or conjugated -C=C- bond. Does anyone know the quantum
mechanical investigation of this system? I'll summarize on ccl. Thanks
in advance.

                                                          Best regards,
                                                            Jin-Koo Kang

----------------------------------------------------
Prof. C. S. Choi
Dept. of chemical engineering
Sogang University, Seoul, Korea
----------------------------------------------------



From chemistry-request@www.ccl.net  Thu Nov 19 03:44:25 1998
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Dear All,

I am trying to find people with experience in using LEAPFROG to suggest
lead affinity peptides.  

The big question - does this work at all ?? 

What is is the best way of sifting out the definate non-running peptides
before synthesis ? 

Is it worth seeing if one of the low energy conformations of the peptide is
close to the one required to provide interaction with the binding site -
i.e the one suggested by the lead finding program.


Your Comments would be greatfuly appreciated,

Thanks

Richard D.
Cranfield University
MK43 0AL

+44 (0)468 582085



 


From chemistry-request@www.ccl.net  Thu Nov 19 04:19:21 1998
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Dear Ivan

An awk script for this job (car2arc.awk) can be found in the insightII
distribution tree in the directory $BIOSYM/gifts/insight/BCL

Hope this helps.

Ivan I. Oleinik wrote:

> Dear All,
>
> I am trying to write  arc file in Biosym format from series of .car
> files. According to MSI documentation the arc file is just a set of the
>  .car "frames" but it does not work if you just append this series in one
> file. It is also mentioned that the arc file is written as one record, but
> formatting the series as one record also does not help.
>
> Does somebody know exact format of arc files?
>
> Ivan Oleinik.
>
> ------------------------------------------------------------------------
> Dr. Ivan I. Oleinik             E-mail : ivan.oleinik@materials.ox.ac.uk
> Department of Materials
> University of Oxford
> Parks Road
> Oxford OX1 3PH                     Tel : +44 (0)1865 283325
> United Kingdom                     Fax : +44 (0)1865 273764
> ------------------------------------------------------------------------
>
> -------This is added Automatically by the Software--------
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--

  Dr Mark J Forster Ph.D.
  Principal Scientist
  Informatics Laboratory
  National Institute for Biological Standards and Control
  Blanche Lane, South Mimms,
  Hertfordshire EN6 3QG, United Kingdom.

  Tel  01707 654753
  FAX  01707 646730
  E-mail  mforster@nibsc.ac.uk



From chemistry-request@www.ccl.net  Thu Nov 19 06:51:55 1998
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	Thu, 19 Nov 1998 11:50:45 GMT
Date: Thu, 19 Nov 1998 11:50:45 +0000 (GMT)
From: Michael Hodgson <mkh100@york.ac.uk>
To: Andrew Dalke <dalke@bioreason.com>
cc: CCL <chemistry@www.ccl.net>
Subject: Re: CCL:Charmm DCD file format
In-Reply-To: <365320A3.46E235A9@bioreason.com>
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> It contains C code to read/write binary DCD files on SGIs and
> HPs (the format is machine dependent).  The Amber group distributes

Is there an easy way of converting DCD files between machine architectures
?
I have a series of trajectory files written from CHARMM running on a linux
platform, and now wish to view the results on an sgi.  It strikes me that
this is a problem that must have been encountered (and hopefully solved)
before.

Many thanks in advance.

-Michael


From chemistry-request@www.ccl.net  Thu Nov 19 13:20:22 1998
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Hi,

Does anybody know if there is (and where it is !!!) any program
(...possibly freeware!!) on the net to create and manage little
libraries of small molecules ?

Thanks


Dr. Antonio Macchiarulo
Istituto di Chimica e Tecnologia del Farmaco,
via del Liceo 1, 06100
Perugia (ITALY)
E_mail antonio@asia.chimfarm.unipg.it

From chemistry-request@www.ccl.net  Thu Nov 19 15:20:17 1998
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Dear CCL People:

Would anyone have a precompiled version of 
VMD for DEC alpha running 4.0c that I could 
get from them? It is an ordeal to compile 
the program from scatch on our machine.

Thanks.

Iraj.

Iraj Daizadeh, Ph. D.
Harvard University
Department of Chemistry and Chemical Biology
12 Oxford Street, Box #35
Cambridge, MA 02138-2902
Phone:  617-495-2654
Fax:   	617-495-1823
email:  daizadeh@lhasa.harvard.edu


From chemistry-request@www.ccl.net  Thu Nov 19 19:01:41 1998
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Michael Hodgson wrote:
> 
> Is there an easy way of converting DCD files between machine architectures
> ?
> I have a series of trajectory files written from CHARMM running on a linux
> platform, and now wish to view the results on an sgi.  It strikes me that
> this is a problem that must have been encountered (and hopefully solved)
> before.

A utility called flipdcd is available from 
ftp://ftp.ks.uiuc.edu/pub/mdscope/namd2/bin/
as a part of NAMD2 distribution. See
http://www.ks.uiuc.edu/Research/namd/ for more
info on NAMD. 

This utility works fine for X-PLOR style dcd files. It will
revert the byte order in-place both ways depending on what 
architecture the file was written on. 

As far as I understand, is was planned to make the source code
available some time in the near future. 

Sincerely,

Sergei Izrailev
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From chemistry-request@www.ccl.net  Thu Nov 19 23:36:30 1998
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Date: Fri, 20 Nov 1998 06:36:31 +0200
From: Maija Lahtela <mlahtela@csc.fi>
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Subject: CSOV analyse
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Dear CCL readers,

Does anyone know how to do CSOV energy decomposition
analysis that would provide the Pauli repulsion, the electrostatic
attraction, the effect of ligand polarization and the charge transfer
contribution ? The molecules are calculated with Gaussian 94.

Thanks in advance.
 
Maija Lahtela-Kakkonen
Researcher
CSC-Center for Scientific Computing
P.O.Box 405
FIN-02101 ESPOO FINLAND
TEL 358-9-4572079
FAX 358-9-4572302
E-MAIL mlahtela@csc.fi


