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Figure 4.
Figure 4. Schematic of the topology (polypeptide fold) of
CaAc-B, adapted from a similar diagram for azurin [Guss et al
1988]. The numerals identify the strands of the polypeptide
backbone. The broken line represents a largeloop at the southern
end of the auracyanin molecule, culminating in the additional
N-terminal strand (strand 0). The solid circlesrepresent the
locations of the four Cu-binding residues.
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