Fig. 2From: Diversity, evolution, and function of myriapod hemocyaninsCopper-binding sites A and B of hemocyanin subunits and phenoloxidase of Cleidogona sp. Conserved residues are shaded in grey. The six copper-binding histidines are shaded in black and denoted by asterisks. Note the replacements of three histidines in CleHcBI2, which cannot bind copperBack to article page