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Paper
Magnetic susceptibility of lacquer tree laccase
Abstract
Magnetic susceptibility measurements at low temperatures show accurately that only two of the four copper ions in Rhus vernicifera laccase are paramagnetic. The non-magnetic ions, previously suggested to be divalent on the basis of reductive titrations, would then form an exchange-coupled two-copper center possibly similar to that proposed for hemocyanin and mushroom tyrosinase. © 1974.