OB does not have a specific MCS (maximal common substructure)
implementation. Rather than hack around with the isomorphism code, you
might be better off to check out SMSD
(http://www.ebi.ac.uk/thornton-srv/software/SMSD/).

- Noel

On 22 March 2011 14:37, andi <ad...@mizzou.edu> wrote:
> Hi all, i'm fairly new with openbabel, so if this is trivial, apologies in
> advance.
>
> I have this problem where I need to find the largest common substructure
> among a database of molecules.
>
> A naive approach to do this, would be to perform isomorphism between two
> molecules and specifying the starting point(OBBitVec). If there was a match,
> then check that substructure if it exists in the rest of the molecule
> database.
> i.e) MapFirst(OBMol, Mapping, OBBitVec);
>
>
> Thanks,
>
> Andi
>
> --
> View this message in context: 
> http://forums.openbabel.org/Common-fragment-to-database-of-molecules-tp3396557p3396557.html
> Sent from the openbabel-devel mailing list archive at Nabble.com.
>
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