Could it be a fatty acid? It looks like it has a (hydrophobic?) tail with a
(charged?) head. Partially occupied perhaps, as they're so close together.

On Sun, Nov 4, 2012 at 7:38 PM, yogesh khandokar <
> wrote:

> Dear All
> I am working on an enzyme which involved in fatty acid biosynthesis. We
> solved the crystal structure of it. Biological unit of this enzyme is
> Hexamer and showing extra electron density in the center of Hexamer.
> Wincoot software doesn't recognize this extra electron density as water
> molecules/ substrate.
> My question is:Is there any way to find the molecules responsible for
> extra electron density?
> Picture is attached with email.
> Thanks in advance for your comments.
> Regards
> --
> Yogesh Khandokar
> PhD Student
> School of Biomedical Sciences
> Charles Sturt University
> Wagga Wagga, NSW,
> Australia

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