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Hello Andrea--

> >
> >> I am using vmd-xplor to calculate the E[NOE] as reported in
> >> http://www.cell.com/biophysj/abstract/S0006-3495(06)71992-0 paper.
> >> the file.tbl is read properly and everything goes fine. I do:
> >> noe load 0 0 file.tbl
> >> noe calc
> >> and a series of violations are reported. Then, in the tcl console I
> >> get a number (i.e. 6.23) and I think that this is the E[NOE]. Is it
> >> right?
> >
> > That should be the noe cost.
> >
> >> If so, what kind of unit is it? kcal/mol or kj/mol?
> >>
> >
> > kcal/mol. Note, that the graphical interface should be more intuitive.
> >
>
> if the value is the NOE cost, it should depend on the cutoff used.
> However, this value does not change in function of the  cutoff, even
> for higher cutoff, when not violations are found.
> 
> how is it possible?

I think you are still referring to VMD-XPLOR, and the cutoff value in
the GUI there (the same as the threshold value in Xplor-NIH) serves only
to determine whether a restraint is violated- it does not affect the
energy calculation.

best regards--
Charles
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