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Structures of representative cupredoxins. The secondary structures are highlighted with beta sheets colored light blue, alpha helices colored red, and unstructured loops and turns colored gray. The structures were drawn using the structure coordinates from PDB files for amicyanin from Paracoccus denitrificans (PDB code 2OV0), plastocyanin from Ulva pertusa (PDB code 1IUZ), azurin from Pseudomonas aeruginosa (PDB code 4AZU) and stellacyanin from Cucumis sativus (PDB code 1JER).
