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From: "Raji, , Stephen" <raji<<at>>chem.iitb.ac.in>
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Subject: W:Help to obtain orbital diagram using CACAO
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Hi All,

     We are using G98 and CACAO softwares for our theoretical studies. But we are unable to get orbital diagram from CACAO as mentioned in its manual. Can anybody help us to get the proper diagram. I am including one sample input,

TITL SJ-1-1
PAR 0 d
KEYW EL WF RO NC HM 
CELL                                                                                  
ATOM   N  0.636435, -0.00061, -0.568066
ATOM   O  1.405423, -0.000782, 1.593398
ATOM   O  3.183605, -0.000164, -1.383972
ATOM   C  -1.452972, -1.190218	, -0.082338
ATOM   C  -2.802214, -1.207024	, 0.239365
ATOM   C  -3.475148, 0.00134, 0.401081
ATOM   C  -2.801026, 1.209144, 0.239581
ATOM   C  -1.4519, 1.190967, -0.082154
ATOM   C  -0.745107, -0.000011, -0.248471
ATOM   C  1.603921, -0.000763, 0.384763
ATOM   C  3.031493, -0.000634, -0.173257
ATOM   C  4.15263, -0.000774, 0.823333
ATOM   H  -3.312084, -2.13938, 0.361889
ATOM   H  -3.309924, 2.141913, 0.362467
ATOM   H  4.07862, -0.869045, 1.465203
ATOM   H  -4.516165, 0.001826, 0.651985
END 

   Hoping help from kind hearts.
Thanks in advance.

*************************************************
Raji Stephen
JRF, Dept. of Chemistry
IIT Bombay, India
http://www.chem.iitb.ac.in/~pghosh/RS.htm
*************************************************

    


From chemistry-request@ccl.net Fri Apr 22 19:02:09 2005
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From: "Sean, , OBrien" <drseanobrien=at=yahoo.co.uk>
To: chemistry=at=ccl.net
X-Web-Message-Number: 050422190134-23982
Subject: W:Substructure matching 
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Hi All,

I am searching for some software that will help me to identify the atoms within a molecule that match a query substructure. For example I wish to find which atoms belong to an imidazole ring. The aim is to extract the matching substructure while keeping the original atomic coordinates.

I know that several substructure matching routines exist, and some are even freely available but I haven't found any that return the identity of the matching atoms. Some return the whole molecule or a tally of how many times the substructure is present. They obviously "know" which atoms match but I am having difficulty identifying them. Similarly matching strings in SMILES doesn't return the initial atom ids.

I would be very grateful for any routines that do this, or that can be modified for this purpose,

Many Thanks,

Sean O'Brien


From chemistry-request@ccl.net Sat Apr 23 13:49:46 2005
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From: "Tamas E. Gunda" <tgunda=at=puma.unideb.hu>
To: "Raji, , Stephen" <raji=at=chem.iitb.ac.in>, <CHEMISTRY=at=ccl.net>
References: <200504231120.j3NBKbuD005864=at=server.ccl.net>
Subject: Re: CCL:W:Help to obtain orbital diagram using CACAO
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The molecule contains less hydrogens than necessary. Is it surely correct?


Dr. Tamas E. Gunda
Dept. of Pharmaceutical Chemistry
University of Debrecen
POBox 36
H-4010 Debrecen, Hungary

tgunda (AT) puma.unideb.hu

----- Original Message ----- 
From: "Raji, , Stephen" <raji=at=chem.iitb.ac.in>
To: <chemistry=at=ccl.net>
Sent: Saturday, April 23, 2005 12:20 PM
Subject: CCL:W:Help to obtain orbital diagram using CACAO


> Hi All,
> 
>      We are using G98 and CACAO softwares for our theoretical studies. But we are unable to get orbital diagram from CACAO as mentioned in its manual. Can anybody help us to get the proper diagram. I am including one sample input,
> 
> TITL SJ-1-1
> PAR 0 d
> KEYW EL WF RO NC HM 
> CELL                                                                                  
> ATOM   N  0.636435, -0.00061, -0.568066
> ATOM   O  1.405423, -0.000782, 1.593398
> ATOM   O  3.183605, -0.000164, -1.383972
> ATOM   C  -1.452972, -1.190218 , -0.082338
> ATOM   C  -2.802214, -1.207024 , 0.239365
> ATOM   C  -3.475148, 0.00134, 0.401081
> ATOM   C  -2.801026, 1.209144, 0.239581
> ATOM   C  -1.4519, 1.190967, -0.082154
> ATOM   C  -0.745107, -0.000011, -0.248471
> ATOM   C  1.603921, -0.000763, 0.384763
> ATOM   C  3.031493, -0.000634, -0.173257
> ATOM   C  4.15263, -0.000774, 0.823333
> ATOM   H  -3.312084, -2.13938, 0.361889
> ATOM   H  -3.309924, 2.141913, 0.362467
> ATOM   H  4.07862, -0.869045, 1.465203
> ATOM   H  -4.516165, 0.001826, 0.651985
> END 
> 
>    Hoping help from kind hearts.
> Thanks in advance.
> 
> *************************************************
> Raji Stephen
> JRF, Dept. of Chemistry
> IIT Bombay, India
> http://www.chem.iitb.ac.in/~pghosh/RS.htm
> *************************************************
> 




From chemistry-request@ccl.net Sat Apr 23 13:36:12 2005
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From: "Hector, , Ismail" <huz|at|hercules88.mit.edu>
To: chemistry|at|ccl.net
X-Web-Message-Number: 050423133419-25345
Subject: W:carbon nanotube with cap geometry
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Hi CCL.net,

     Would anyone have the cartesian coordinates or z-matrix for any carbon nanotube (of any length or chirality) with an endcap on it?  I tried searching the web for one, but I could only find open-ended ones.

Thanks,
Hector


From chemistry-request@ccl.net Sat Apr 23 13:06:54 2005
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To: "Sean, , OBrien" <drseanobrien|at|yahoo.co.uk>
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Subject: Re: CCL:W:Substructure matching
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Hi  Brian,

check out our open source Java library "The Chemistry Development Kit 
(CDK)" [1]. It lives at http://cdk.sourceforge.net.

The class UniversalIsomorphismChecker can do full graph matching, 
subgraph searches and Maximum Common Subgraph (MCS) matching.
On demand, it provides you with a map of matching atoms or bonds in the 
two graphs under inspection.

The CDK comes with an extended set of unit tests which are good examples 
of how to do certain thing. Below, you also find a small code example 
> from the tests, showing how to get a subgraph atom map [2].

Cheers,

Chris

[1] Steinbeck, C.; Han, Y. Q.; Kuhn, S.; Horlacher, O.; Luttmann, E. et 
al. The Chemistry Development Kit (CDK): An open-source Java library for 
chemo- and bioinformatics. Journal of Chemical Information and Computer 
Sciences 2003, 43, 493-500. http://dx.doi.org/10.1021/ci025584y

[2] Example for getting a subgraph atom map. Note that this is a
test case. The test makes two molecules, indole and pyrrole, in a 
predefined way. The arrays result1 and result2 contain the expected 
(known) mapping of the atom numbers in pyrrole to the atom numbers in 
indole. The assertions at the end check if the test leads to the 
expected result.

public void testGetSubgraphAtomsMaps() throws java.lang.Exception
{
	int[] result1 = {6, 5, 7, 8, 0};
	int[] result2 = {3, 4, 2, 1, 0};
	
	AtomContainer mol = MoleculeFactory.makeIndole();
	AtomContainer frag1 = MoleculeFactory.makePyrrole();
	HueckelAromaticityDetector.detectAromaticity(mol);
	HueckelAromaticityDetector.detectAromaticity(frag1);
	List list = UniversalIsomorphismTester.getSubgraphAtomsMaps(mol, frag1);
	List first = (List)list.get(0);
	for (int i = 0; i < first.size(); i++) {
		RMap rmap = (RMap)first.get(i);
		assertEquals(rmap.getId1(), result1[i]);
		assertEquals(rmap.getId2(), result2[i]);
	}
}

-- 
Priv. Doz. Dr. Christoph Steinbeck (c.steinbeck|at|uni-koeln.de)
Head of the Research Group for Molecular Informatics
Cologne University BioInformatics Center (http://www.cubic.uni-koeln.de)
Z|lpicher Str. 47, 50674 Cologne
Tel: +49(0)221-470-7426   Fax: +49 (0) 221-470-7786

What is man but that lofty spirit - that sense of enterprise.
... Kirk, "I, Mudd," stardate 4513.3..


Sean, , OBrien wrote:
> I am searching for some software that will help me to identify the atoms within a molecule that match a query substructure. For example I wish to find which atoms belong to an imidazole ring. The aim is to extract the matching substructure while keeping the original atomic coordinates.
> 
> I know that several substructure matching routines exist, and some are even freely available but I haven't found any that return the identity of the matching atoms. Some return the whole molecule or a tally of how many times the substructure is present. They obviously "know" which atoms match but I am having difficulty identifying them. Similarly matching strings in SMILES doesn't return the initial atom ids.
> 
> I would be very grateful for any routines that do this, or that can be modified for this purpose,



From chemistry-request@ccl.net Sat Apr 23 16:02:27 2005
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From: "Wolf-D. Ihlenfeldt" <wdi |a| xemistry.com>
To: "'Sean, , OBrien'" <drseanobrien |a| yahoo.co.uk>
Cc: <chemistry |a| ccl.net>
Subject: RE: W:Substructure matching 
Date: Sat, 23 Apr 2005 14:59:10 -0400
Organization: Xemistry GmbH
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Sean,

This can easily be done in the academic version of the CACTVS
chemoinformatics toolkit (www.xemistry.com/academic) with a very small
script, similar to the sample in the attachment.



> -----Original Message-----
> From: Computational Chemistry List 
> [mailto:chemistry-request |a| ccl.net] On Behalf Of Sean, , OBrien
> Sent: Friday, April 22, 2005 7:02 PM
> To: chemistry |a| ccl.net
> Subject: CCL:W:Substructure matching 
> 
> 
> Hi All,
> 
> I am searching for some software that will help me to 
> identify the atoms within a molecule that match a query 
> substructure. For example I wish to find which atoms belong 
> to an imidazole ring. The aim is to extract the matching 
> substructure while keeping the original atomic coordinates.
> 
> I know that several substructure matching routines exist, and 
> some are even freely available but I haven't found any that 
> return the identity of the matching atoms. Some return the 
> whole molecule or a tally of how many times the substructure 
> is present. They obviously "know" which atoms match but I am 
> having difficulty identifying them. Similarly matching 
> strings in SMILES doesn't return the initial atom ids.
> 
> I would be very grateful for any routines that do this, or 
> that can be modified for this purpose,
> 
> Many Thanks,
> 
> Sean O'Brien
> 

From chemistry-request@ccl.net Sat Apr 23 20:41:22 2005
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To: "Hector, , Ismail" <huz () hercules88.mit.edu>, chemistry () ccl.net
From: David Gallagher <dgallagher () cachesoftware.com>
Subject: Re: CCL:W:carbon nanotube with cap geometry
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H56 Hect63r,

I have a C460 with both ends closed, as CAChe or pdb format. Let me know 
which you want and can email it to you.

Regards
David Gallagher

At 10:36 AM 4/23/2005, Hector, , Ismail wrote:
>Hi CCL.net,
>
>      Would anyone have the cartesian coordinates or z-matrix for any 
> carbon nanotube (of any length or chirality) with an endcap on it?  I 
> tried searching the web for one, but I could only find open-ended ones.
>
>Thanks,
>Hector
>
>
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