Cyanide removes all copper from the enzyme, and re-embedding with type I and type II copper has been shown to be impossible. Type III copper, however, can be re-embedded back into the enzyme. A variety of other anions inhibit laccase.
Cyanide disrupts the enzyme by removing copper, making it inactive. Re-embedding type I and type II copper is not possible. Type III copper can be re-embedded into the enzyme.  Several anions inhibit laccase activity.