Figure 4 - full size

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.