Figure 4 Stereoview of a F[o] - F[c] omit map of Glu275
contoured at 2.5 .
Green, orientation of the side chain of Glu275 in the starting
model (B/Lee/40 NA complexed with sialic acid). Red, fit of
Glu275 to the density in the final model of the BANA
207-B/Lee/40 NA complex. A new water molecule is found near the
former position of the Glu275 carboxyl group that forms
hydrogen-bond interactions with His273 and Arg223. Both Glu275
and the water molecule were omitted for calculation of the
electron density shown.
The above figure is reprinted
by permission from the IUCr:
Acta Crystallogr D Biol Crystallogr