Figure 6.
Figure 6. C^a superposition of the plug domains in FecA,
FepA and FhuA. The structures of FecA[apo] (gold), FepA
(magenta) and unliganded FhuA (light blue) were used for the
superposition. The TonB box motifs of FecA[apo] and FepA are
circled.
The above figure is reprinted
by permission from Elsevier:
J Mol Biol
(2003,
332,
353-368)
copyright 2003.