Description of the problem:
I have a set of triple resonance experiments and a 15N-HSQC. I initially
picked the peaks from all the spectra anonymously. Given the set of typical
triple resonance spectra, I was able to connect the peaks from the same
residue and its preceding residue to their corresponding amide peak (NH) in
the 15N-HSQC, i.e., establish i and i-1 connectivity of the anonymously
numbered spin systems.
Eg., HNCA: {5}N[10],{5}N[11],{5}CA[200] (added to the spin system using 'R:'
menu); {5}N[10],{5}N[11],{6}CA[203] (added to the sequential spin system
using 'R:' menu)
HNcoCA: {5}N[10],{5}N[11],{6}CA[203]
Please see below, 'steps to reproduce.'
Version-Release number of selected component:
1.0.9 (may have been present in 1.0.8)
How reproducible:
Always
Steps to Reproduce:
1. Assign a set of spectra as described above in the 'description of the
problem.'
2. Now assign residue specific information and convert the annonymous spin
system created in the previous step, eg., {5}N and {5}H to a (named and
numbered) residue in the sequence of your molecule, say, MS1.
Actual Results: T
In the example above, spin system {5} and its corresponding intra-residual
CA, {5}CA, gets the residue specific assignment (name and number) from MS1,
eg., {5}CA becomes 4TyrCA (an atom of, say, residue i). However, despite the
presence of inter-residual connectivity (say, i-1) information from the
above steps, anonymous spin system {6}CA remains anonymous.
Expected Results:
You expect the inter-residual peak to get the corresponding assignment
automatically. However, it does not. Exceptions are spectra like HNCA which
have both i and i-1 information, where it seems to work fine. It remains
anonymous in spectra that give only i-1 information like HNcoCA, HNCO.
Additional info:
NA
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