Thanks Paolo,

Unfortunately the behaviour I described persists with SVN 4995.

cheers,

Doug



Quoting Paolo Tosco <paolo.to...@unito.it> on Thu, 30 Aug 2012 11:48:51 +0200:

> Dear Douglas,
>
> did you try to use the SVN version? I myself submitted a number of  
> fixes to the pdbqt format module which might solve your header  
> issues (not the protonation problems, though).
>
> Cheers,
> Paolo
>
> --
> ==========================================================
> Paolo Tosco, Ph.D.
> Department of Drug Science and Technology
> Via Pietro Giuria, 9 - 10125 Torino (Italy)
> Tel: +39 011 670 7680 | Mob: +39 348 5537206
> Fax: +39 011 670 7687 | E-mail: paolo.to...@unito.it
> http://open3dqsar.org | http://open3dalign.org
> ==========================================================
>
>
>
> On 30 Aug 2012, at 11:33, Douglas Houston  
> <dhous...@staffmail.ed.ac.uk> wrote:
>
>> Hi,
>>
>> I don't know if this is related, but I've found another example of  
>> what appears to be an "erroneous structure" with the -p option in  
>> 2.3.1. I noticed it when converting to PDBQT format, but there's  
>> also a problem when I convert to PDB. The files in question are  
>> attached.
>>
>> babel -isdf input.sdf -opdbqt nop.pdbqt
>> #works fine (also works OK with -h option)
>>
>> babel -isdf input.sdf -opdbqt p.pdbqt -p 7.4
>> #produces a nonstandard PDBQT file with multiple header sections.  
>> Converting to PDB with -p also produces an erroneous structure but  
>> at least the file format is complied with (I think).
>>
>> I've noticed this problem with a number of molecules, all of which  
>> contain azide groups.
>>
>> cheers,
>>
>> Doug
>>
>>
>> Quoting Noel O'Boyle <baoille...@gmail.com> on Wed, 22 Aug 2012  
>> 15:28:11 +0100:
>>
>>> Just following up on this as Chris just fixed the issue reported by
>>> Douglas. The problem in your case is different, if it is actually an
>>> error by Open Babel. If you look in phmodel.txt, you can see all of
>>> the protonation rules. The one being applied in your case is:
>>>
>>> #guanidine or amidine
>>> TRANSFORM [#6^2+0:1](~[N^2])(~[N^2])* >> [#6+:1](~N)(~N)*        12.5
>>>
>>> If you don't like this, just comment it out by putting a # at the
>>> start. Should we adjust the rule somehow as you think it is incorrect?
>>>
>>> Regards,
>>>   Noel
>>>
>>> On 18 June 2012 05:43, green69 <gcinci...@gmail.com> wrote:
>>>> Hey Douglas, thank you for your help and for the information  
>>>> provided. I'll
>>>> take this into account.
>>>>
>>>> I hope somebody could fix this bug soon. The '-p' option seems so  
>>>> useful to
>>>> me.
>>>>
>>>> Cheers!
>>>>
>>>> --
>>>> View this message in context:  
>>>> http://forums.openbabel.org/erroneous-structures-when-the-option-p-is-activated-tp4655151p4655158.html
>>>> Sent from the General discussion mailing list archive at Nabble.com.
>>>>
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>>
>>
>>
>>
>> _____________________________________________________
>> Dr. Douglas R. Houston
>> Lecturer
>> Room 3.23
>> Institute of Structural and Molecular Biology
>> Michael Swann Building
>> King's Buildings
>> University of Edinburgh
>> Edinburgh, EH9 3JR, UK
>> Tel. 0131 650 7358
>>
>> --
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>>
>> <p.pdbqt>
>> <nop.pdbqt>
>> <input.sdf>
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>
>




_____________________________________________________
Dr. Douglas R. Houston
Lecturer
Room 3.23
Institute of Structural and Molecular Biology
Michael Swann Building
King's Buildings
University of Edinburgh
Edinburgh, EH9 3JR, UK
Tel. 0131 650 7358

-- 
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.



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