3JCγN and 3JCγCO values for aromatic residues
of the hE:FOL:NADP+ (squares), hE:THF:NADP+ (circles),
hE:NADPH (diamonds), and hE:THF (triangles) complexes. Symbols are
as described in the legend of Figure 4. The 3JCγCO value for Phe142 of
the hE:THF complex is a lower bound because of resonance overlap.
The average coupling over all complexes is shown as an X, except for
residues with different rotamer populations in one or more complexes,
which are labeled with an asterisk. Complexes are excluded from the
average if the error in the coupling constant is >1 Hz. The standard
deviation of 3Javg is shown
as a dark gray vertical bar.