Hi Andrew,

thank you for your answer: now I have a clue!
I knew that the structure is a NMR model, but what I didn't understand was
that some atoms were repeated (with different coordinates). Now I have
pruned my structure file and I can see a much more acceptable structure.

Thank you very much,
Annalisa


2008/12/19 Andrew Purkiss-Trew <[email protected]>

> Hi Annalisa,
>
> Is the original coordinate file an NMR structure? It looks to me like
> there are several copies of each atom, which is consistent with the pdb
> file resulting from an NMR refinement. These will usually have several
> different models of the peptide, all consistent with the NMR data.
>
> You will need to extract just one set of coordinates and look at those.
> Which set of coordinates to use depends on the software used to generate
> the pdb, but look for the first or the 'best' model, the pdb header
> should tell you which is best.
>
> Hope this helps at bit
>
> Andrew Purkiss-Trew
>
> On Thu, 2008-12-18 at 15:40 +0100, annalisa bordogna wrote:
> > Hi all,
> > I have a little problem with the visualization of a peptide
> > conformation: as you can see from the picture I enclose, the structure
> > appears as if every atom is bound to every neighbour atom. What (and
> > how) can I set in PyMOL, to visualize a correct structure?
> >
> > Thank you very much for your help.
> > Best regards,
> > Annalisa
> >
> > -------------------------------------------------------
> > Annalisa Bordogna
> > Ph.D. Student
> > Università degli Studi di Milano - Bicocca
> > Milano, IT
> >
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