However, a comparison of the upper distance for the class II and class III groups revealed no significant differences (p > 0.763).
These restraints set intermolecular interatom upper distance limits of 2 Å for all atoms of residues input as "active".
However, for crosspeaks pairs associated with the intra-residue H8/6 to H2' and H3', upper distance limits of 4.2 and 3.2 Å were employed for NOEs of medium and strong intensity, respectively48.
Conventional Förster resonance energy transfer (FRET) processes involving a pair of fluorophore and organic quencher are restricted to an upper distance limit of ~10 nm.
However, the application of FRET to study large macromolecules is restricted due to an upper distance limit of ~10 nm [ 1, 7].
An upper distance limit of 5.0 Å was set for ambiguous distance restraints.
Intraclass intraobserver correlation coefficients of 0.92 (upper distance), 0.91 (posterior distance), 0.92 (anterior distance), 0.90 (angle of eminence), and 0.94 (height of eminence), and interobserver correlation coefficients of 0.90 (upper distance), 0.90 (posterior distance), 0.93 (anterior distance), 0.90 (angle of eminence), and 0.91 (height of eminence) were obtained.
The assignment of disulfide bridges was then validated by structure calculations that assessed the compatibility of plausible alternative Cys-Cys disulfide combinations with the input of NOE upper distance constraints and dihedral angle constraints.
The clinical significance of the upper distance is that it determines whether the condyle is morphologically altered since an increase or decrease of the distance may produce pathologies such as resorption and condylar hyperplasia [14, 15].
Upper distance restraints were obtained through calibration of NOE peaks volumes using a built-in CYANA macro.
