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From: Loan Huynh <huynhkl2000[at]yahoo.ca>
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Subject: Help: Unit of Solubility Parameter
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Hi CCL,
   Could someone please help me with the problem that I have right now with the unit of the solubility parameter.
    I'm currently calculate the solubility parameter using the scripts file provide by CERIUS.  The script file calculated the cohesive density energy and solubility parameter.   As I know the solubility parameter (delta) have different unit: (MPa)1/2 or (J/cm3)1/2 or (cal/cm3)1/2.  
In the scripts file, they defined that:
     (cal/cm3)1/2 = 2.0455 (J/cm3)1/2. 
However, when I search the internet, it appearred that:
    (J/cm3)1/2 = 2.0455 (cal/cm3)1/2     
and
    (MPa)1/2 = 2.0455 (cal/cm3)1/2
 
I have no idea who are right here.  I mean the scripts file is provided by CERIUS.
 
Thank you very much for your help. 
 
LH

Aaron Deskins <ndeskins[at]purdue.edu> wrote:
Summary:

I'm looking for a review of term symbols- particularly molecular. Can 
anyone recommend a review article or book?

_______________

Hi.

Check Haken and Wolf's "Molecular Physics and Elements of Quantum Chemistry"


Regards,
Ojwang JGO
---------------------
Eindhoven University,
The Netherlands


_______________

For diatomic molecules, may I suggest the classic: G. Herzberg, Spectra
of Diatomic Molecules. For polyatomic molecules, master group theory.
F. A. Cotton's text is an excellent place to start.

Wayne E. Steinmetz
Carnegie Professor of Chemistry
Woodbadge Course Director
Chemistry Department
Pomona College




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<DIV>Hi CCL,</DIV>
<DIV>&nbsp;&nbsp; Could someone please help me with the problem&nbsp;that I have right now with the unit of the solubility parameter.</DIV>
<DIV>&nbsp;&nbsp;&nbsp; I'm currently calculate the solubility parameter using the scripts file provide by CERIUS.&nbsp; The script file calculated the cohesive density energy and solubility parameter.&nbsp;&nbsp; As I know the solubility parameter (delta) have different unit: (MPa)1/2 or (J/cm3)1/2 or (cal/cm3)1/2.&nbsp; </DIV>
<DIV>In the scripts file, they defined that:</DIV>
<DIV>&nbsp;&nbsp;&nbsp; &nbsp;(cal/cm3)1/2 = 2.0455 (J/cm3)1/2. </DIV>
<DIV>However, when I search the internet, it appearred that:</DIV>
<DIV>&nbsp;&nbsp;&nbsp;&nbsp;(J/cm3)1/2 = 2.0455&nbsp;(cal/cm3)1/2&nbsp;&nbsp;&nbsp;&nbsp; <BR>and</DIV>
<DIV>&nbsp;&nbsp;&nbsp; (MPa)1/2 = 2.0455 (cal/cm3)1/2</DIV>
<DIV>&nbsp;</DIV>
<DIV>I have no idea who are right here.&nbsp; I mean the scripts file is provided by CERIUS.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Thank you very much for your help. </DIV>
<DIV>&nbsp;</DIV>
<DIV>LH</DIV>
<DIV><BR><B><I>Aaron Deskins &lt;ndeskins[at]purdue.edu&gt;</I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Summary:<BR><BR>I'm looking for a review of term symbols- particularly molecular. Can <BR>anyone recommend a review article or book?<BR><BR>_______________<BR><BR>Hi.<BR><BR>Check Haken and Wolf's "Molecular Physics and Elements of Quantum Chemistry"<BR><BR><BR>Regards,<BR>Ojwang JGO<BR>---------------------<BR>Eindhoven University,<BR>The Netherlands<BR><BR><BR>_______________<BR><BR>For diatomic molecules, may I suggest the classic: G. Herzberg, Spectra<BR>of Diatomic Molecules. For polyatomic molecules, master group theory.<BR>F. A. Cotton's text is an excellent place to start.<BR><BR>Wayne E. Steinmetz<BR>Carnegie Professor of Chemistry<BR>Woodbadge Course Director<BR>Chemistry Department<BR>Pomona College<BR><BR><BR><BR><BR>-= This is automatically added to each message by the mailing script =-<BR>To send e-mail to subscribers of CCL put the string CCL: on your Subject:
 line<BR>and send your message to: CHEMISTRY[at]ccl.net<BR><BR>Send your subscription/unsubscription requests to: CHEMISTRY-REQUEST[at]ccl.net <BR>HOME Page: http://www.ccl.net | Jobs Page: http://www.ccl.net/jobs <BR><BR>If your is mail bouncing from ccl.net domain due to spam filters, please<BR>use the Web based form from CCL Home Page <BR>-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<BR><BR><BR><BR><BR><BR></BLOCKQUOTE><p>__________________________________________________<br>Do You Yahoo!?<br>Tired of spam?  Yahoo! Mail has the best spam protection around <br>http://mail.yahoo.com 
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From chemistry-request@ccl.net Sat Jun 18 23:36:52 2005
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From: SANDEEP KUMAR <skumar23~at~jhem.jhu.edu>
To: Xavier.Deupi~at~stanford.edu,
        Mireille Krier
 <mireille.krier~at~pharma.u-strasbg.fr>
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Hi Mireille and Deupi, 

Kinks in alpha helices can also be caused by water molecules hydrogen bonding with the helix backbone are the region of kinks. Second, The kinks are usually spread over a region rather than being caused by just single residues and non-proline residues are often found in the kink regions. I also found Plots of local bending angles as calculated by HELANAL and also the i,i+4 N--O distance are a reliable way to locate the kink regions in the helices. While one can calculate kink angles, such calculations fit straight lines to two parts of the helix separated the kink region. But in reality, these parts of the helix may also be curved. This is particularly true for longer helices. Hence, calculations of the kink angles may not be very accurate in such cases simpply because straight lines do not fit the two parts well. This was the reason why I did not include kink angles calculations routine in the HELANAL when I wrote it  more than 10 years ago. Instead, HELANAL characterizes t
he alpha helical geometry without any prior assumptions and a helix is classified as kinked, if a local bending angle in the middle of the helix (That is not in the first or last turn of the helix) is more than 20 degrees.  

If you would like to analyze the causes of kinks and the residues responsible for helix kinks then I guess locating the kink regions using HELANAL  would be good. But HELANAL would not compute kink angles. Please let me know if you require  such routine as well,  I'll search in my programs and send it to you. 

Yours sincerely, 
Sandeep Kumar

-------------------------------------------------------------------
Dr. Sandeep Kumar, 
Associate Research Scientist, 
Johns Hopkins University Department of Biology, 
106 Mudd Hall, 3400 N. Charles Street, 
Baltimore, MD 21218,  USA. 
Phone: 410-516-8433,
Email: kumarsan~at~jhu.edu.
URL:  http://myprofile.cos.com/Kumarsan.
or      https://jshare.johnshopkins.edu/skumar23/public_html/


----- Original Message -----
From: Xavier Deupi <Xavier.Deupi~at~stanford.edu>
Date: Friday, June 17, 2005 1:18 pm
Subject: CCL:Alpha Helix kink

> Hi Mireille,
> 
> You can also use HelAnal (Bansal et al. J Biomol Struct Dyn. 2000 
> Apr;17(5):811-9) to detect and measure local distortions of the 
> helical 
> structure, in terms of local (i.e. per residue) bend and twist 
> angles. 
> You can see an application to Pro-kinked alpha-helices in Deupi et 
> al., 
> Biophys J. 2004 Jan;86(1 Pt 1):105-15.
> 
> Hope this helps,
> 
> xavi
> 
> Mireille Krier wrote:
> 
> > Dear CCLers,
> >
> > we are looking for a tool that can detect (because not always 
> induced 
> > by proline)
> > and measure the angle of an kink in an alpha helix.
> > Any suggestions?
> > We found in the literature SWINK, (Cordes et al., Sansom Group)
> > was developed to estimate the kink and swivel angle of TM small 
> alpha, 
> > Greek-helices.
> > Any ideas, if this is available?
> >
> > Many thanks in advance to the community for the any help provided.
> >
> > Mireille Krier
> >
> 
> -- 
> Xavier Deupi, Ph.D.
> Department of Molecular and Cellular Physiology
> Beckman Center for Molecular and Genetic Medicine (B161)
> 279 Campus Drive, Stanford University School of Medicine
> Stanford, CA 94305 (USA)
> 
> E-mail: Xavier.Deupi~at~stanford.edu
> Phone: +1 (650) 725-6497
> Fax : +1 (650) 725-8021
> 
> 
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From chemistry-request@ccl.net Sat Jun 18 18:59:04 2005
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Date: Sat, 18 Jun 2005 15:58:57 -0700 (PDT)
From: Robyn Ayscue <kajsicat[at]yahoo.com>
Subject: Re: CCL:autodock3 dies upon launch with multiple errors
To: chemistry[at]ccl.net
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Yong,

I tried the mkdpf3 command you gave me. I end up with
this error:

frodo 6@
/disk02/usr/local/autodock/dist305/share/mkdpf3
DPN_adt.out.pdbq 2c9q_HEMq_FLPq.pdbqs

________________________________________________________________________________
mkdpf3
(C) 1999, Garrett Morris, TSRI.

Ligand = "DPN_adt.out.pdbq", Macromolecule =
"2c9q_HEMq_FLPq.pdbqs".

Making "DPN_adt.out.2c9q_HEMq_FLPq.dpf",  based on the
atom types found in "DPN_adt.out.pdbq"

...Using "dpf3gen".

dpf3gen - Command not found

Sorry, I could not create
DPN_adt.out.2c9q_HEMq_FLPq.dpf
________________________________________________________________________________


But I DO have dpf3gen; I did a "find -name" in the
c-shell and found it. Do you think it's just a matter
of the path for the software not being set?

Thanks for your help!

Robyn


--- Yong Liang Yang <yonyang[at]ic.sunysb.edu> wrote:

> Dear Robyn:
> 
> In a command window in IRIX,
> 
> try,
> 
> # mkdpf3 <ligand_name>.pdbq  <enzyme_name>.pdbqs
> 
> this will produce a <ligand>.<enzyme>.dpf file, then
> 
> try
> 
> # autodock3 -p <ligand>.<enzyme>.dpf -l
> <ligand>.<enzyme>.dlg&
> 
> This might work if ADT could not launch the job.
> 
> 
> 
> Cheers
> 
> 
> Yong
> 
> 
> 
> 
> 
> 
> 
> 
> On Fri, 17 Jun 2005, Robyn Ayscue wrote:
> 
> > All,
> >
> > Sorry for the cross-post.
> >
> > I'm running AutoDockTools using autodock/autogrid
> > version 3.05 on an SGI machine with IRIX 6.5.24.
> I'm
> > trying to dock an effector molecule in the active
> site
> > of an enzyme (p450 2c9) with a substrate molecule
> also
> > present. Autogrid finishes out with no problems,
> but
> > autogrid dies immediately upon launch with the
> > following errors:
> >
> >
> > Can't find ".dpf" in the dock-parameter filename.
> >
> > AutoDock needs the extension of the grid parameter
> > file to be ".gpf"
> > and that of the docking parameter file to be
> ".dpf".
> >
> >
>
/disk02/usr/local/autodock/dist305/bin/sgi4D.IRIX64_6.5_R10000/autodock3:
> > Wrong number of x grid-points in grid-map file
> > "2c9q_HEMq_FLPq.A.map".
> >
>
/disk02/usr/local/autodock/dist305/bin/sgi4D.IRIX64_6.5_R10000/autodock3:
> > Use either 32 or 1129013060 throughout!
> >
>
/disk02/usr/local/autodock/dist305/bin/sgi4D.IRIX64_6.5_R10000/autodock3:
> > ERROR: Using wrong grid-map file.
> >
> >
>
/disk02/usr/local/autodock/dist305/bin/sgi4D.IRIX64_6.5_R10000/autodock3:
> > Aborting...
> >
> >
>
/disk02/usr/local/autodock/dist305/bin/sgi4D.IRIX64_6.5_R10000/autodock3:
> > Unsuccessful Completion.
> >
> >
> > First it complains about not being able to find a
> > docking parameter file with .dpf as the suffix,
> but
> > the file DOES have a .dpf suffix and it is listed
> as
> > having one in the command that is typed in the
> command
> > line used to launch autodock. The .dpf file looks
> fine
> > as far as I can tell, compared to other .dpf files
> > I've used for other docking runs that have
> completed
> > successfully.
> >
> > The next thing it complains about is the differing
> > number of grid points. It keeps referring to the
> > number "1129013060" but I can't find that number
> in
> > any of the grid-map files. The number of x- grid
> > points in all grid-map files is the same.
> >
> > Autodock comes to the conclusion that I'm using
> the
> > wrong grid-map files, but the files I'm using ARE
> the
> > correct files (I checked and double-checked).
> >
> > If anyone has had experience with this kind of
> error
> > message and knows how to resolve it, I'd
> appreciate
> > any input. Thanks much!
> >
> > Robyn Ayscue
> > rayscue[at]hsc.wvu.edu
> > kajsicat[at]yahoo.com
> >
> >
> >
> >
> >
> >
> >
> ____________________________________________________
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From chemistry-request@ccl.net Sun Jun 19 05:19:17 2005
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"Ojwang, J.G.O." wrote:
> 
> Hi.
> I somehow sorted out the LIM007 case for a different system. The
> geometry was not correct!
> What now bothers me about the present structure is that using a
> visualisation package I see something not resembling crystal at all!
> Reasons why the geometry inputs cannot be wrong are: (i) I've used
> different sets of well documented theoretical and experimental
> geometrical inputs with the same result (ii) other geometries for other
> different structures, other space groups, are very much perfect and
> gives me the right crystals.
> My guess is (i) there is a bug in the crystal03 code as pertains to
> space group 11, but I've been assured that crystal03 code space group is
> bugfree (ii) maybe the structure(Na3AlH6) was assigned the wrong space
> group.
> 
> The geometry I used are as follows:
> 
> (a =5.33, b=5.53, c=7.68, beta=90.103)(space group(P21/n) 11)
> Al  0.0   0.0   0.0
> Na  0.0   0.0   0.5
> H 0.9897 0.4532 0.2535
> H 0.2281 0.3307 0.5437
> H 0.1608 0.2673 0.9366
> 
> I tried other different sets of geometrical inputs(experimental and
> theoretical) with the same results. The program calculates alright but
> the structure does not resemble a crystal at all. (Al should be six
> coordinates in H)
> 
> Well, let me hear your opinion.
> 
> Best Regards,
> Ojwang'
> 
> BTW: What bothers me is (i) was the wrong space group assigned to
> Na3AlH6 or is there a bug in crystal03 code in so far as space group 11
> is concerned.
> 
> -----Original Message-----
> From:   Computational Chemistry List on behalf of Huub van Dam
> Sent:   Fri 6/17/2005 9:48 AM
> To:     chemistry<<at>>ccl.net
> Cc:
> Subject:        CCL:CRYSTAL03 - Help needed
> Hi,
> 
> I have been informed by our local CRYSTAL experts that most likely your
> input geometry is wrong. Alternatively you may have a very diffuse
> function in your basis set. LIM007 refers to the number of lattice
> vectors needed  to describe your system correctly. This number can get
> exceedingly big if some atoms are too close together, or likewise if you
> use too diffuse functions for crystal calculations in your basis set.
> 
> Let me know if this does not solve your problems and I will progress it
> further.
> 
> Best wishes,
> 
>      Huub
> 
> Ojwang, J.G.O. wrote:
> 
> >Dear CCLnetters,
> >Has anyone had experience with Crystal03? I've tried to run a system
> but I get error messages to the effect that:
> >(i) increase LIM007
> >(ii) neighbour list too big increase LIMBEC
> >Any idea how I can do this.
> >Futrther when I try to run a supercel I get an error message that 'file
> size limit exceed'. How can i increase the limit of the file size.
> >Waiting for an urgent response from any Crystal03 informed netter.
> >
> >Best Regards,
> >Ojwang' JGO
> >
> >Eindhoven University of Technology,
> >The Netherlands.
> >
> 
> Huub van Dam                  email: h.j.j.vandam<<at>>dl.ac.uk
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In order to answer with a (hopefully) clear explanation we
need more information on crystallographic data
(we did not find Na3 Al H3 in ICSD data base).

The space group number is not enough to correctly generate the
lattice from experimental data, it has
to be specified the unique axis.
This information is usually given with the complete alphabetic
group name.
For instance, space group 11 "contains" 
Patterson symmetry P 1 2/m 1 and P 1 1 2/m

Waiting for more information,

CRYSTAL support team Torino


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Later this year I will be editing a special issue of the Journal of Chemical Information and Modeling (formerly J. Chem. Inf. Comput. Sci.) with a focus on collaboratories, virtual laboratories, grid computing and other e-science issues. I aim to contact all the best teams in this field with a view to getting them to submit a manuscript, with a deadline of September 1, 2005. I am hoping for a publication date early in 2006; papers would appear on the Web from the end of 2005. The Web manuscript submission page is at https://paragon.acs.org/paragon/index.jsp. It is important that you state in your cover letter that your paper is for my focus issue on e-science. Manuscripts will be peer reviewed, of course, so I cannot promise publication: only contributions that meet the usual standards of JCIM will be accepted. I am writing to you to encourage you to submit a manuscript and to help me publicize this exciting venture. I do hope that you will be interested in giving me your support.

 

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