> > > I wonder if this may have arisen because you had both spectra showing
> > > when you were picking peaks.
>
> There were indeed a few out-of-range peaks hiding in the peak lists.
> It is of course easy to forget that the HNCO is still active while
> you're looking at a tiny region in the HNCACB.
If you place a peak 'manually' ( <Ctrl> + click) you always have to be
aware of all the spectra that are active. However, if you use the peak
extremum finder ( <Shift> + <Ctrl> + click & drag) then there is no
problem, you will only pick peaks that relate to the visible contours, in
only the carbonyl region or whatever...
T.
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Dr Tim Stevens Email: [log in to unmask]
Department of Biochemistry [log in to unmask]
University of Cambridge Phone: +44 1223 766018 (office)
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