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Figure 1.
Figure 1 A ribbon diagram of the 18 kDa fragment of duck
ovotransferrin corresponding to the NII domain. The location of
the synergistic carbonate anion and the ferric cation at the
N-terminus of the helix formed by residues 124-134, helix 5, is
clearly shown together with tyrosine residues Tyr95 and Tyr188.
The remaining ligands to the iron have been omitted (see Figs.
2-and 3-), but the exposure of the cation to the solvent is
apparent. The poorly defined loop region, 144-149, is at the
left-hand side of the diagram, immediately following helix 5.
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