From chemistry-request@ccl.net Mon Jul 21 20:26:35 2003
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Date: Mon, 21 Jul 2003 20:25:49 -0400
From: "Michael Chen" <chenm~at~upstate.edu>
To: <chemistry~at~ccl.net>
Subject: SHAKE problem.
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Hi, guys,

   I ran a multi-processor job in use of SHAKE, and I got tons of bizzar
messages like this:

 ERROR in SHAKEA. Contraints spanning parallel partition ignored.

   Would someone please tell me what was going on? Was this because of
hardware things or software things? My CHARMM still kept running, but those
messages were so annoying.
   Thank you very much.
   Have a nice day.

*****************************************************
Michael Chen

Department of Biochemistry & Pharmacology
SUNY Upstate Medical University 
750 East Adams Street 
Syracuse, NY 13210
USA
*****************************************************


From chemistry-request@ccl.net Tue Jul 22 03:55:59 2003
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From: "Daniele Bellocchi" <bellocks~at~iris.chimfarm.unipg.it>
To: <chemistry~at~ccl.net>
Subject: ONIOM calculation
Date: Tue, 22 Jul 2003 09:55:55 +0200
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Dear All,
i performed a two layers ONIOM calculation (AM1:amber) on a complex
enzyme-substrate. The problem that i have is that AMBER requires all the
parameters for the ligand, even though the ligand belongs to the QM
shell.
 Is there any ways to circonvent this problem?
Thanks in advance.
 
 
Daniele Bellocchi, PhD Student
Molecular Modeling Section
Istituto di Chimica e Tecnologia del Farmaco
University of Perugia
Italy
bellocks~at~chimfarm.unipg.it
 

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'>Dear =
All,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'>i performed a two =
layers
ONIOM calculation (AM1:amber) on a complex enzyme-substrate. The problem =
that i
have is that AMBER requires all the parameters for the ligand, even =
though the
ligand belongs to the QM shell.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><span
style=3D'mso-spacerun:yes'>&nbsp;</span>Is there any ways to circonvent =
this
problem?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><span class=3DSpellE><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Thanks</span></font></span><=
font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'> in <span
class=3DSpellE>advance</span>.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><font
size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;font-family:"Courier =
New"'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>Daniele Bellocchi, PhD =
Student<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><span
class=3DSpellE><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;
font-family:"Courier New"'>Molecular</span></font></span><font size=3D2
face=3D"Courier New"><span =
style=3D'font-size:10.0pt;font-family:"Courier New"'> <span
class=3DSpellE>Modeling</span> <span =
class=3DSpellE>Section</span><o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><font
size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Istituto
di Chimica e Tecnologia del <span =
class=3DGramE>Farmaco</span><o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New";mso-ansi-language:EN-US'>University of =
Perugia<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier =
New";mso-ansi-language:EN-US'>Italy<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-layout-grid-align:none;text-autospace:none'><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier =
New";mso-ansi-language:EN-US'>bellocks~at~chimfarm.unipg.it<o:p></o:p></span=
></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Arial;mso-ansi-language:EN-US'><o:p>&nbsp;</o:p></span=
></font></p>

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From chemistry-request@ccl.net Mon Jul 21 17:45:09 2003
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             Seminar  Announcement (2nd notice):

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</b>1. Discovering Asparagine Synthetase Inhibitors using Molecular
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2. Active-Site Identification, Ligand Design, Docking, &amp; QSAR<br>
3. Demonstration of new BioMedCAChe 6.0 for Windows<br><br>
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From chemistry-request@ccl.net Tue Jul 22 08:59:44 2003
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Date: Tue, 22 Jul 2003 09:59:58 -0300
From: srwhttl|at|mta.ca
To: chemistry|at|ccl.net
Subject: Unknown ONIOM error.
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CCL,

I am trying to run an two layered ONIOM calculation on an emzyme using B3LYP 6-
31+G(d,p):PM3.  However, the calculation dies after is has read in the input 
and the error message is the following:

GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Berny optimization.
Initialization pass.
Optmz1 allocation failure:  iend,mxcore=1294987819  16252928
Error termination via Lnk1e in /usr/local/gaussian/g03/l103.exe at Mon Jul 21 
18:11:33 2003.
Job cpu time:  0 days  0 hours  3 minutes 16.6 seconds.
File lengths (MBytes):  RWF=     12 Int=      0 D2E=      0 Chk=      1 
Scr=      1

Thanking in advance for any feedback,
Sarah Whittleton
Mount Allison University, New Brunswick, Canada





From chemistry-request@ccl.net Tue Jul 22 12:29:23 2003
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Date: Tue, 22 Jul 2003 11:52:47 -0400
From: Rick Venable <rvenable(at)pollux.cber.nih.gov>
To: Michael Chen <chenm(at)upstate.edu>
cc: chemistry(at)ccl.net
Subject: Re: CCL:SHAKE problem.
In-Reply-To: <sf1c4c6c.001(at)upstate.edu>
Message-ID: <Pine.SGI.4.51.0307221144190.105776(at)pollux.cber.nih.gov>
References: <sf1c4c6c.001(at)upstate.edu>
ReplyTo: Rick_Venable(at)nih.gov
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On Mon, 21 Jul 2003, Michael Chen wrote:
>    I ran a multi-processor job in use of SHAKE, and I got tons of
> bizzar messages like this:
>
>  ERROR in SHAKEA. Contraints spanning parallel partition ignored.
>
>    Would someone please tell me what was going on? Was this because of
> hardware things or software things? My CHARMM still kept running, but
> those messages were so annoying.

It means you are attempting to apply SHAKE to bonds between heavy atoms,
e.g. C-C bonds, which is a problem for parallel usage.  The constraint
is not applied (ignored) for any case where the 2 atoms have been
partitioned onto separate processors.

A more typical usage of SHAKE is

SHAKE BONH PARAM

where only bonds to H atoms are constrained (to their parameter length);
the atom partioning scheme always keeps H atoms in the same partition as
the heavy atom they are bonded to, so the above error message should not
occur.


=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
Rick Venable           29/500
FDA/CBER/OVRR Biophysics Lab
1401 Rockville Pike    HFM-419
Rockville, MD  20852-1448  U.S.A.
(301) 496-1905   Rick_Venable(at)nih.gov
ALT email:  rvenable(at)speakeasy.org
-------------------------------------
"Don't blame me, I voted for Kang."
                         Homer
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=

From chemistry-request@ccl.net Tue Jul 22 11:23:04 2003
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Date: Tue, 22 Jul 2003 17:22:57 +0200 (CEST)
From: Faza Olalla Nieto <faza_at_uvigo.es>
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To: <chemistry_at_ccl.net>
Subject: Gaussian error
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Dear netters,
Anyone knows what the following error message mean?

"Inverted reduced A of dimension 334 with in-core refinement.
 Not enough memory in AlgDDF.
 Error termination via Lnk1e in /usr/local//g98/linda-exe/l1002.exel."

And what can I do to eliminate it, of course.
Thank you in advance.

Regards,


Olalla Nieto Faza
Dpto. Quimica Organica
Universidade de Vigo
Lagoas-Marcosende 36200 Vigo (Spain)
e-mail: faza_at_uvigo.es



From chemistry-request@ccl.net Tue Jul 22 11:19:55 2003
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From: =?iso-8859-1?Q?=22Teran_Casta=F1on=2C_Hugo_Gutierrez_de=22?=
	 <hteran_at_IMIM.ES>
To: "'Peter Zwart '" <Zwart_at_embl-hamburg.de>,
   "'Pedro Antonio Reche '"
	 <reche_at_research.dfci.harvard.edu>
Cc: "'ccp4bb_at_dl.ac.uk '" <ccp4bb_at_dl.ac.uk>,
   "'chemistry_at_ccl.net '"
	 <chemistry_at_ccl.net>
Subject: RE: [ccp4bb]: modeling inhibitor in groove
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Hi Peter,

You can overlay the proposed inhibitor to the crystallographic inhibitor on
the basis of molecular electrostatic potential (MEP) or GRID generated
molecular interaction fields (MIF) with the software MIPSIM
(http://www1.imim.es/modeling/mipsim/index.html). With the best
superposition choosen, you can simply replace one inhibitor with the other
one and carry on your simmulations.

Good luck,
Hugo 
-----Original Message-----
From: Peter Zwart
To: Pedro Antonio Reche
Cc: ccp4bb_at_dl.ac.uk; chemistry_at_ccl.net
Sent: 21/07/2003 3:14
Subject: CCL:[ccp4bb]: modeling inhibitor in groove



>
> Hi, I have a PDB of a kinase in complex with a inhibitor, and I would

> like to replace that inhibitor with a related compound. I have 
> already  generated a PDB file for this  compound but I do not  I have 
> to  proceed, and thereby any input about the software (better if unix 
> open  source), and strategy to replace the original inhibitor with 
> this  related compound will be greatly appreciated. Also, does anyone 
> know of  a software to overlay  3D structures of small molecules? I am

> thinking  that overlaying the derivative compound with the inhibitor 
> in the 3D  structure of the kinase would be a possibility, but what 
> software to  use?!
> Anyway,  any idea, or suggestion about best way to solve this problem

> will be greatly appreciated.
> Cheers


You could give MOLREP a try, the manual says:

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


      Fitting two models (FM)
      <http://www.yorvic.york.ac.uk/%7Ealexei/molrep.html#FM>


The idea is to fit the electron densities instead of the atomic models, 
trying to find the best overlap. Advantages are:

    * can be used for cases with very low homology;
    * can be used when amino acid sequence is absent;
    * no need to use the list of equivalent atoms.

If you define only two files of models (searching model and model_2), 
without a file of structure factors (Fobs), the program will fit the 
search model (keyword FILE_M 
<http://www.yorvic.york.ac.uk/%7Ealexei/molrep.html#file_m>) to the 
second model (keyword MODEL_2 
<http://www.yorvic.york.ac.uk/%7Ealexei/molrep.html#model_2>). The 
search model must be smaller or equal to the second model.

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

No clue how to handle (large) conformational differences though.

Or soak and solve maybe ?

Peter Zwart



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From chemistry-request@ccl.net Tue Jul 22 11:08:12 2003
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Date: Tue, 22 Jul 2003 10:08:07 -0500 (CDT)
From: Emad Tajkhorshid <emad_at_ks.uiuc.edu>
To: computational Chemistry List <chemistry_at_ccl.net>
Subject: Spartan ESP charge calculation
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Hi,

Does anybody know what scheme (Merz-Kollman, Chelp, ChelpG, ...) is used 
by Spartan to choose points at which the electrostatic potential will be 
calculated and used for generating ESP charges? I could not find any 
explanation for such details in the help of the program. 

Thanx
Emad
------------------
Emad Tajkhorshid, Ph.D.        http://www.ks.uiuc.edu/~emad  
Assistant Director of Research
NIH Resource for Macromolecular Modeling and Bioinformatics

Theoretical and Computational Biophysics Group
Beckman Institute, 405 N. Mathews,  Urbana,  IL 61801,  USA
Tel:(217)244-4361 Fax:(217)244-6078 Email: emad_at_ks.uiuc.edu



From chemistry-request@ccl.net Tue Jul 22 13:34:22 2003
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From: Grzegorz Bakalarski <grzesb|at|biogeo.uw.edu.pl>
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Subject: CCL: g03 and opteron
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Dear All,

Has anybody tried to compile g03 on opteron machine
either 32 bit or 64 bit using pgf77 (32 or 64 bit)  or intel (32 bit) ?
Any suggestions and maybe some benchmarks or comparisions to
xeon based machine ?
Kind regards,

GB

From chemistry-request@ccl.net Tue Jul 22 14:21:51 2003
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Reply-To: <dopetec~at~dslextreme.com>
From: "Donald Keidel" <dopetec~at~dslextreme.com>
To: <chemistry~at~ccl.net>
Cc: <Gordon.W.Selling~at~USA.dupont.com>
Subject: CCL:  Summary of pka database for carboxylic acids 
Date: Tue, 22 Jul 2003 11:21:44 -0700
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I want to thank everyone for their responses and suggestions.  I ended
up using ACD Labs prediction software and I am currently developing a
binding affinity prediction equation with this information and other
data.  Sorry that the summary took so long to post, but I noticed today
that I never did it and had all the e-mails marked as unread.  Thank you
again.

Don

------------------------------------------------------------------------
---------------------------------------
Donald J. Keidel
University of California, Riverside
Department of Biochemistry and Molecular Biology
Riverside, CA 92521
phone:  (909) 787-5493
fax:  (909) 787-4434
dopetec~at~dslextreme.com
webpage: www.biochemistry.ucr.edu/gru/gradstudents/don_keidel/index.htm
 




