title: On the active site of hemocyanin.
mesh_terms: D000818:Animals; D001665:Binding Sites; D002942:Circular Dichroism; D003300:Copper; D006146:Guanidines; D006433:Hemocyanins; D006639:Histidine; D006863:Hydrogen-Ion Concentration; D049831:Octopodiformes; D011485:Protein Binding; D011487:Protein Conformation; D014508:Urea
chemical_list: D006146:Guanidines; D006639:Histidine; D003300:Copper; D014508:Urea; D006433:Hemocyanins