Figure 3.
Fig. 3. Representative section of the electron density map.
Stereoview of the final 3F[obs]-2F[calc] electron density map
(blue) at a resolution of 2.7 Å is contoured at 1.5 , showing
the ferrichrome-iron binding site, including water molecules.
The ferrichrome-iron molecule is shown in yellow, and the iron
atom is indicated as a large red sphere. Select side-chain
residues (Glu98, Gly99, and Gln100 from apex B; Tyr116 from apex
C; Tyr244 and Trp246 from L3; Phe^313 from 7; Phe^391
from 9; and
Phe^702 from 21) and the
two water molecules (Wat151 and Wat154) found in the binding
site are labeled (34) and colored white and red, respectively.
The above figure is reprinted
by permission from the AAAs:
Science
(1998,
282,
2215-2220)
copyright 1998.
, showing
the ferrichrome-iron binding site, including water molecules.
The ferrichrome-iron molecule is shown in yellow, and the iron
atom is indicated as a large red sphere. Select side-chain
residues (Glu98, Gly99, and Gln100 from apex B; Tyr116 from apex
C; Tyr244 and Trp246 from L3; Phe^313 from 
7; Phe^391
from