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Figure 7.
Figure 7. The zinc coordination spheres of FucA:Sulf
(yellow), FucA:PGH (red), FucA mutants Glu73->Ser (blue),
Glu73->Gln (light blue/grey), E73Q/Y113F/Y209F (magenta),
Ser71->Gln (green) and of carbonic anhydrase (pink, tetrahedron
drawn out) [Hakansson et al 1992]. The structures were
superimposed on the contacting histidine nitrogen atoms and the
zinc ion. The N  epsilon,
Greek atoms of histidine 92, 94 and 155 and the zinc ion of FucA
are shown in the respective colors. They correspond to His96-N
epsilon,
Greek , His94-N epsilon,
Greek , and His119-Nd and the zinc ion of carbonic anhydrase,
respectively.
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